If you’re planning a trip to Japan, chances are your itinerary is packed with the usual heavyweights: the neon-lit crosswalks of Tokyo, the historic temples of Kyoto, and the street food stalls of Osaka.
While the "Golden Route" is iconic, it’s no secret that major Japanese cities are busier than ever. If you’re craving a calmer, more authentic connection to Japan—where ancient pilgrimage routes meet world-class modern art and breathtaking coastal views—it’s time to head south to Shikoku and the Seto Inland Sea.
Here is your ultimate guide to exploring Japan’s best-kept secret.
Why Visit Shikoku and the Seto Inland Sea?
Located just across the inland sea from Honshu (Japan's main island), the region offers a stark, refreshing contrast to the country's hyper-urban centers.
Fewer Crowds: Experience traditional Japanese culture without pushing through tourist bottlenecks.
World-Class Outdoor Adventures: From epic coastal cycling routes to misty mountain hikes.
Art & Architecture: Home to island-wide art installations designed by world-renowned architects like Tadao Ando.
Top Things to Do in Shikoku & the Seto Inland Sea
1. Go Island-Hopping in the Seto Inland Sea (Naoshima & Teshima)
Known globally as Japan’s "Art Islands," this archipelago transformed quiet fishing villages into open-air contemporary art museums.
Naoshima: Home to Yayoi Kusama’s famous spotted pumpkins and the underground Chichu Art Museum, built directly into the hillside to preserve the natural landscape.
Teshima: Don't miss the Teshima Art Museum, a single, breathtaking concrete structure shaped like a drop of water set amidst rice terraces.
Pro Tip: Book your museum tickets online weeks in advance. Entry slots fill up fast, even during shoulder seasons!
2. Cycle Across the Sea on the Shimanami Kaido
If outdoor adventure is on your bucket list, cycling the Shimanami Kaido is non-negotiable.
This 70-kilometer (43-mile) dedicated bike route connects Japan’s main island of Honshu to Shikoku via six spectacular suspension bridges crossing the Seto Inland Sea.
Distance: 70 km (Can be completed in 1 day or split over 2 days).
Bike Rentals: Cross-country hybrid bikes, road bikes, and e-bikes are readily available for rent at starting points in Onomichi or Imabari.
3. Cross the Vine Bridges of Iya Valley (Shikoku)
Deep in the mountainous heart of Tokushima Prefecture lies the Iya Valley, one of Japan’s three "unexplored regions."
Surrounded by steep gorges and misty rivers, you can cross historical Kazurabashi (Vine Bridges)—hand-woven bridges made of mountain vines historically used by fleeing samurai to cut access to enemies.
Don't Miss: Relaxing in a remote, riverside onsen (hot spring) after a day of hiking the valley.
4. Walk Part of the Ancient 88 Temple Pilgrimage
Shikoku is home to the Shikoku 88 Temple Pilgrimage (Ohenro), a 1,200-kilometer circular route established in the 9th century.
While walking the full route takes over a month, travelers can easily walk short, scenic sections around Tokushima or Ehime to experience ancient temples tucked inside cedar forests.
Local Foods You Must Try
No trip to Japan is complete without diving into the local culinary scene:
Sanuki Udon (Kagawa): Famous across Japan for its springy, chewy noodles and savory dashi broth.
Citrus Fruits (Ehime): Ehime is renowned for producing over 40 varieties of citrus, including sweet Iyokan and Mikan oranges.
Fresh Katsuo no Tataki (Kochi): Seared bonito fish cooked over rice straw embers, served with garlic slices and ponzu sauce.
Practical Travel Information
Best Time to Visit
Spring (March to May): Pleasant temperatures and cherry blossoms framing the sea.
Fall (October to November): Crisp weather, perfect for cycling and hiking with vibrant fall foliage.
How to Get Around
By Train: The JR Setouchi Area Pass or ALL SHIKOKU Rail Pass offers unlimited travel across local train lines and select ferries.
By Rental Car: Renting a car in Takamatsu or Matsuyama gives you maximum freedom to explore the remote Iya Valley at your own pace.
Final Thoughts: Is Shikoku Worth It?
If you want to trade crowded photo spots for peaceful island vistas, scenic bike rides, and deep cultural immersion, Shikoku and the Seto Inland Sea belong at the very top of your Japan travel bucket list.
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