Held once every three years, the Setouchi Triennale is a world-famous contemporary art festival held on the islands of the Seto Inland Sea. What happens? The Setouchi Triennale transforms Japan’s Seto Inland Sea into a sprawling, open-air museum. Taking place once every three years across multiple islands, the festival showcases site-specific installations, interactive exhibits and performances, all deeply connected to the region’s history and coastal landscapes. A defining feature of the Setouchi Triennale is its integration of art with the environment. Many pieces interact with the sea, the sky, and the traditional architecture of the islands. The event was launched in 2010 to revitalise the struggling communities who have fallen victim to the depopulation issues of Japan's rural areas. Schedule 2025 The Setouchi Triennale lasts more than 100 days, divided into three parts. Spring Session: April 18 to May 25 Summer Session: August 1 to August 31 Autumn Session: October 3 to November 9 Tickets This is a hotly anticipated event, so we suggest purchasing tickets in advance to secure your spot. Setouchi Triennale 2025 Passport The Setouchi Triennale passport is the easiest and most affordable way to explore the festival. Instead of paying for each artwork individually, this pass gives you one-time access to each site and comes with extra perks like discounts on shops, events, and local attractions. There are also stamps to be collected. Types & Prices If you plan to visit multiple times, the All-Season Passport is the best deal. It gives you access throughout the entire Triennale (spring, summer, and fall). Advance price (until April 17, 2025): Regular price: Youth (16-18 years old, with ID): Children (15 and under): Free (some museums and artworks not included) For those only visiting once, the Single-Season Passport allows entry during one season (spring, summer, or fall) for . This will be available after the Triennale begins. If you're planning to go more than once, buying the All-Season Passport before April 17 is the best value. Note that some museums, like the Chichu Art Museum and Teshima Art Museum, require a separate admission fee.