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The Iya Valley (祖谷渓谷 Iya Keikoku) region in Tokushima Prefecture, Japan is a scenic area known for its dramatic mountain valleys and old vine bridges.
The Iya Valley and the inner parts of Shikoku have historically been remote and difficult to enter,
making them a favorite retreat for refugees and defeated Heike warriors although access has improved in recent years.

Higashi Iya History and Folk Museum
The Higashi Iya History and Folk Museum is a history museum at the entrance to Oku Iya.
You will find exhibits and display items like tools, clothes, household items, and other traditional items of the region inside of the facility.

Hours: 8:30 to 17:00 
Closed: Weekends and holidays (Dec to Feb), New Year holidays 
Admission: 410 yen

The Iya Valley is usually divided into two areas.
Nishi Iya (West Iya) located around the entrance to the valley and is slightly more developed and more accessible as there are relatively frequent buses to some of the major attractions.
Oku Iya (Inner Iya, also called Higashi Iya or East Iya) lies further back into the valley so is difficult to reach without a rental car or other means of private transportation. 

Access Information
A rental car is recommended to visit the area.

1. To Nishi Iya (West Iya)
 *From Awa Ikeda Station to Kubo, take a bus and transfer to another bus bound for Nijukazurabashi or Mount Tsurugi.
Get off at the Nijukazurabashi bus stop.
The one way journey will take 2 hours with a cost of 1790 yen.
There are only 4 buses a day.
Moreover buses from Kubo to the bridge operate only on weekends and holidays from April to November.

2. To Oku Iya (Inner Iya)
Rental car stores are available around Oboke and Awa Ikeda Stations.
A rental car is recommended, particularly for visiting the less traveled Oku Iya area.
Note: The roads are very narrow and have frequent blind curves, which make driving both hazardous and slow.

The Iya Valley (祖谷渓谷 Iya Keikoku) region in Tokushima Prefecture, Japan is a scenic area known for its dramatic mountain valleys and old vine bridges.
The Iya Valley and the inner parts of Shikoku have historically been remote and difficult to enter,
making them a favorite retreat for refugees and defeated Heike warriors although access has improved in recent years.

Kazurabashi Bridge 
Suspension bridges made of mountain vines (kazurabashi) were one of the only ways to easily move people and goods across the river of the of the Iya Valley in the past.
Their origins are unclear but legends say that they were either first raised by Kobo Daishi, who was founder of the Shingon Sect of Japanese Buddhism,
or built by Heike refugees hiding in the area after their defeat in the Gempei War or Genpei kassen (1180-1185) as a means of quickly cutting off access to the valley.

There are only three surviving bridge as though 13 bridges once spanned the valley.
Iya Kazurabashi (祖谷かずら橋), the largest and most popular of the remaining bridges, stretches 45 meters across the Iya River at the center of the valley,
and offers visitors an restless view of the water 14 meters below the open slats of the span.
The bridge is rebuilt every three years and is anchored to tall cedar trees at both ends and has steel cables hidden within the vines for safety.
The bridge a one way street

Hours: Sunrise to sunset (illuminated in the evenings from 19:00 to 21:00)
Closed: No closing days
Admission: 500 yen
The level of English: Good

The Iya Valley is usually divided into two areas.
Nishi Iya (West Iya) located around the entrance to the valley and is slightly more developed and more accessible as there are relatively frequent buses to some of the major attractions.
Oku Iya (Inner Iya, also called Higashi Iya or East Iya) lies further back into the valley so is difficult to reach without a rental car or other means of private transportation. 

Access Information
A rental car is recommended to visit the area.

The Oboke Gorge (Ōboke) has unusual geological strata, including a rudaceous schist formation designated as a natural monument.
Oboke Gorge and neighboring Koboke Gorge a little ways downstream, are narrow, steep sided gorges near the entrance to the Iya Valley.
Their names mean "big dangerous steps" and "small dangerous steps" as their jagged, rocky walls can be dangerous to navigate.
Yoshino River has cut through the Shikoku Mountains over the ages, eroding crystalline schist into winding gorges with myriad shapes and forms,
which almost look like marble statues. 

The gorges are one of the leading outdoor destinations in Japan and are known for their beautiful natural scenery and for the variety of outdoor attractions.

Oboke Sightseeing Boat Cruise

Guides show interesting rocks, many of which resemble different animals, along the way on this gentle 30 minute boat ride down the Yoshino River.
Boats depart and return to a dock a short ways away from Lapis Oboke and Oboke Station.
Passenger requires taking off their shoes and sitting on the floor of the boat during the cruise.

Hours: 9:00 to 17:00 
Closed: No closing days 
Admission: 1080 yen

Access Information
A rental car is recommended to visit the area.

The Oboke Gorge (Ōboke) has unusual geological strata, including a rudaceous schist formation designated as a natural monument.
Oboke Gorge and neighboring Koboke Gorge a little ways downstream, are narrow, steep sided gorges near the entrance to the Iya Valley.
Their names mean "big dangerous steps" and "small dangerous steps" as their jagged, rocky walls can be dangerous to navigate.
Yoshino River has cut through the Shikoku Mountains over the ages, eroding crystalline schist into winding gorges with myriad shapes and forms,
which almost look like marble statues. 

The gorges are one of the leading outdoor destinations in Japan and are known for their beautiful natural scenery and for the variety of outdoor attractions.

Lapis Oboke
Lapis Oboke is a rest area (called Michi no Eki meaning, station on the road) close to Oboke Station with a tourist information center, restaurant and shop.
Inside is the funny little Yokai Museum featuring models and dioramas of the ghosts and monsters (yokai), such as Demon King.
The Museum was recognized by cartoonist, Mizuki Shigeru.  
A small gem museum resides on the floor above the Yokai Museum. 

Hours: 9:00 to 17:00 
Closed: Mondays from December to February 
Admission: 500 yen (both museums) 
The level of English: Moderate
 

The Oboke Gorge (Ōboke) has unusual geological strata, including a rudaceous schist formation designated as a natural monument.
Oboke Gorge and neighboring Koboke Gorge a little ways downstream, are narrow, steep sided gorges near the entrance to the Iya Valley.
Their names mean "big dangerous steps" and "small dangerous steps" as their jagged, rocky walls can be dangerous to navigate.
Yoshino River has cut through the Shikoku Mountains over the ages, eroding crystalline schist into winding gorges with myriad shapes and forms, which almost look like marble statues. 

The gorges are one of the leading outdoor destinations in Japan and are known for their beautiful natural scenery and for the variety of outdoor attractions.

River Rafting
The upstream of the Yoshino river, called Oboke and Koboke is famous for its torrent.
And the river  is one of Japan's most well known destinations for whitewater rafting.
There are several outdoor adventure companies which offer guided tours.
Full day and half day rafting tours are available, as well as a variety of other adventures sports such as hydrospeed and canyoning.

Hours: 8:00 to 20:00 
Season: April to November 
Admission: Half day tours start from 5200 yen
Some company has an English web site.

Naoshima (直島) is an island in the Seto Inland Sea that is known for its modern art museums, architecture and sculptures. Part of Kagawa Prefecture, the island with its Mediterranean atmosphere, sandy beaches and sunny weather, combined with a laid back, rural feel is a relaxing getaway from Japan's large urban areas.
 

The island is one of the main venues of the Setouchi Triennale art festival, displaying one of the highest densities of artworks among the participating ports and islands. In 2013, the Ando Museum dedicated to architect Ando Tadao, joined the many permanent art pieces already found across Naoshima.

By Ferry
One or two buses per hour from Miyanoura Ferry Terminal bound for Tsutsujiso that stop at the Nokyo-mae bus stop in Honmura (5 minutes, \100) along the way. 
By bicycle
It is a 2.5 kilometer bicycle ride (10 minutes) or walk (35-45 minutes) from the Miyanoura Ferry Terminal. Honmura has also its own port with infrequent ferry connections to Uno Port on Honshu.

The Art House Project takes empty houses scattered about residential areas, and turns the spaces themselves into works of art, weaving in the history and memories of the period when the houses were homes. Meetings between visitors to the island and the island's people in places where they go about their daily lives also provide occasions for a variety of interesting encounters.

The art houses are scattered throughout town, and most of them are unassuming from the street, blending into the surrounding traditional Japanese neighborhood. The interior of each, however, has been given over to artists to convert into whatever suits their artistic vision.

Closed: Mondays
Open on Mondays for national holidays but closed the next day.
Open Day Calendar
Hours: 10:00 a.m.-4:30 p.m.

The Art House project has English information page.

Kadoya  one of the art house project

Kadoya was the first art house completed. This nearly 200-year old house was restored using Japanese plaster, smoked cedar board, and traditional tiles. Artworks on display include a LED display set in a pool of water, a window turned into a digital display and an unconventional Japanese scroll painting.

Works:Tatsuo Miyajima
Closed : Mondays  Open on Mondays for national holidays but closed the next day
Hours: 10a.m-4:30p.m
Admission: 410yen

Minamidera 
Architecture by Ando Tadao, Artwork by James Turrell
Minamidera, built on the former site of a temple, is a new structure designed by Ando Tadao, the star architect who also designed the art museums on Naoshima. Inside is James Turrell's "Backside of the Moon", an intriguing art piece that plays with your perception of light.

Go'o Shrine (護王神社)

Designed by Sugimoto Hiroshi
Go'o Shrine is an old Shinto shrine enshrined from the Edo period that has been restored with a modern makeover by Artist Hiroshi Sugimoto. An optical glass staircase leads from the worship hall to an underground chamber that represents the unity of heaven and earth. Visitors may enter the underground chamber from a narrow side entrance.

Hiroshi Sugimoto
He was born in Japan in 1948. A photographer since the 1970s, his work deals with history and temporal existence by investigating themes of time, empiricism, and metaphysics.

Closed: Mondays  Open on Mondays for national holidays but closed the next day
Hours: 10a.m - 4:30p.m
Admission: 410 yen

Ishibashi (石橋)
Artwork by Senju Hiroshi

One industry in Naoshima about a century ago was salt making.Ishibashi was originally built around 100 years ago as the home of a prosperous salt merchant. It has since been restored and houses two large paintings by Senju Hiroshi. One is painted onto the sliding doors of the main building, while the other, a large painting depicting a spectacular waterfall, hangs in the adjacent storehouse.

Hiroshi Senju
Born in Tokyo, 1958. PhD, Tokyo National University of Fine Art and Music. Honorable mention in painting category, 46th Venice Biennale (1995).

Closed: Mondays  Open on Mondays for national holidays but closed the next day
Hours: 10a.m-4:30p.m
Admission: 410yen

Gokaisho 【碁会所】
Artwork by Suda Yoshihiro

Gokaisho (literally "a meeting place to play go") was built on the site of a gathering place where people came to play go, a type of Japanese chess. A traditionally designed building holds hand carved wooden camellia flowers arranged on the tatami mat floors. The rooms overlook a small garden with real camellia flowers to contrast with the wooden creations.
There is an intriguing contrast between this sculpture and the real camellia outside in the garden.

Yoshihiro Suda
Born in Yamanashi, Japan, Suda lives and works in Tokyo. In 1992, he received his BA in Graphic Design and has exhibited internationally in numerous solo and group shows. Recent museum shows include the Chiba City Museum of Art in 2012, The Manghha Museum of Japanese Art and Technology, Krakow, in 2011, Asia Society Museum, New York, and the Contemporary Museum, Honolulu. In 2008 his work was included in Out of the Ordinary at London’s Victoria and Albert Museum. His work has been exhibited extensively in group shows in the USA, Japan, Germany, Australia and Quebec

Closed: Mondays  Open on Mondays for national holidays but closed the next day
Hours: 10a.m-4:30p.m
Admission: 410yen

 Haisha【はいしゃ】
Architecture and Artwork by Otake Shinro
Haisha (literally "dentist"), once the home and office of a local dentist, has been completely transformed by artist Shinro Ohtake into a sculptural or graphic artwork some of which can be viewed from different floors of the two storied house. The artworks include a replica of the Statue of Liberty. Otake also designed the I Love You bath house. Dreaming Tongue, the title of the artwork, represents the process of calling to mind a dream from the tastes and aromas of a morsel in one's mouth.

Shinro Ohtake
He is a Japanese artist who was born in Tokyo and lives in Uwajima, Japan. He paints, creates installations and designs record covers and book covers. He has published dozens of books, such as a dream diary, a picture book, essays and art books.

Closed: Mondays  Open on Mondays for national holidays but closed the next day
Hours: 10a.m-4:30p.m
Admission: 410yen

The Chichu Art Museum (地中美術館, Chichū Bijutsukan) is a unusual modern art museum built into a hillside overlooking the southern coast of Naoshima. The museum building, designed by Ando Tadao and itself a work of art, is mostly located underground and solely utilizes natural light to illuminate the artwork. This creates a viewing experience that is deeply influenced by the surrounding natural environment.

The museum has been built around quite a small collection of art. The first gallery shows large murals from Claude Monet's "Water Lilies" series. This is followed by a few works by James Turrell, who uses light as a medium. They include the "Open Sky" room from his "Skyspaces" series which has sister exhibits around the world including the 21st Century Museum in Kanazawa. Finally, the deepest part of the Chichu Museum houses the "Time/Timeless/No Time" installation by Walter De Maria.

Tickets are purchased at the museum's ticket center which is located a short walk downhill from the museum entrance. The ticket center has a small cafe and waiting area as only a limited number of visitors are allowed to the museum at one time. There are also coin lockers available since bags and cameras are not allowed in the museum and must be stowed before entering.    
Access info                                                                        
There are one or two buses per hour from Miyanoura Ferry Terminal via Honmura to the Tsutsujiso bus stop at the east gate of the Benesse House (15 minutes, 100 yen), from where it is possible to walk (30 minutes) or take a free shuttle bus to the Chichu Art Museum (10 minutes). Or the museum is about a two kilometer bicycle ride (10 minutes) or walk (30-40 minutes) from the Miyanoura ferry terminal.

From the Chichu Art Museum it is just a few minutes on the free shuttle bus to either the Lee Ufan Museum or the Benesse House. It is also possible to walk between the museums (5 and 15 minutes respectively).                                                      

Chichu Art Museum
Hours: 10:00 to 18:00 (until 17:00 from October to February) 
Admission ends one hour prior to closing time
Closed: Mondays (or Tuesday if Monday is a national holiday)
Infrequent irregular closures for maintenance
Admission: 2060 yen

Lying along the coast of the Seto Inland Sea in Kagawa Prefecture is the Takamatsu Castle. This castle, also known as the Tamomo Castle, is one of the few castles built along the water.  The moat of the Takamatsu Castle actually draws directly from the sea.

Built in 1590 by Ikoma Chikamasa, the Ikoma Clan were the original rulers of this castle. Relatives of the Tokugawa Shogun, the Matsudaira Clan overtook the castle 54 years later. The Matsudaira Clan ruled for the rest of the Edo Period.  During the Meiji Period, the castle main keep was torn down.  Currently, there is a strong movement to reconstruct this castle, known as one of the three Great Waterfront Castles in Japan.

Within the castle grounds, there are only a few of the castle’s original buildings.  Originally twenty, only two turrets, the Ushitora Yagura and the Tsukimi Yagura, remain today. Visitors can also see the Asahimon Gate as well as the moats and walls to imagine how glorious Takamatsu castle was in its heyday. The castle garden is well maintained and visitors can appreciate the beauty of Japanese gardens here.

Hiunkaku building lies in the center of the castle park.  With its large tatami mat rooms, this building is used as an exhibition space/community hall.  Tea ceremony and flower arrangement classes are held here.

The hours of entry to the castle vary according to the month.
April to May: 5:50 to 18:30
June to August: 5:30 to 19:00
September: 5:30 to 18:30
October: 6:00 to 17:30
November: 6:30 to 17:00
December to January: 7:00 to 17:00
February: 7:00 to 17:30
March: 6:30 to 18:00
Closed: December 29th to 31st
Admission: 200 yen

Access Information:
Takamatsu Castle is located next to Kotoden Takamatsu-Chikko Station.
It is also a short walk from the JR Takamatsu Station.