Built Without a Nail: A New Home for Kumiko Opens in Toyama
Towering joinery, ancient mountains, and a craft that uses not a single nail—Toyama’s newest cultural space puts centuries of woodworking on full display.
Thin strips of wood, joined by hand into geometric patterns and held together without using a single nail—Toyama’s newest cultural space puts a centuries-old craft on permanent display.
By AAJ Editorial TeamKumikoza, a hands-on facility dedicated to the traditional Japanese woodworking technique kumiko, opened on April 15, 2026, just in front of Toyama Station in Toyama Prefecture.
What Is Kumikoza?
Kumiko has shaped the look of Japanese interiors for generations—the lattice of a sliding fusuma door, the geometry behind shoji paper, the carved transoms known as ranma. Thin strips of wood interlock without a single nail, creating intricate geometric patterns that take years to learn and a lifetime to master.
Kumikoza is a hands-on facility based in Toyama City where visitors can try kumiko-making for themselves. The team behind it had been fielding a steady stream of requests for factory tours and workshops, both from within Japan and abroad, and wanted to put the craft within easier reach. A kumiko craftsperson works on site every day the facility is open, so visitors can watch authentic craftsmanship up close rather than read about it.
A Mountain Range, Built One Strip of Wood at a Time
The first thing visitors see is a monumental kumiko piece depicting the Tateyama Mountain Range, 5,500 millimeters wide. Nearby, a collaborative work renders Shomyo Falls—the tallest waterfall in Japan—in washi paper and kumiko, alongside a piece inspired by the Owara Kaze no Bon dance festival. Three pieces, three pillars of Toyama identity, built strip by strip.
Wood with a History
What sets Kumikoza apart is where the wood comes from. Some of it would otherwise have been burned or left to rot: pear trees from the Kureha orchards that had stopped bearing fruit, persimmon trees felled to keep bears out of residential areas, and hiba cypress salvaged from houses destroyed in the Noto Peninsula earthquake. Each piece carries a specific history before it ever becomes a pattern on the wall.
Hands, Eyes, and a Cup of Tea
Inside, a kumiko assembly workshop (offered in English) lets first-time visitors experience the craft firsthand. The facility also displays original work from seven glass artists based in Toyama City and serves tea made from kuromoji (Japanese spicebush). It is a small space, but one built to be experienced with more than just the eyes.
DATA
Facility Name: Kumikoza
Address: 1-2-3 Shintomi-cho, Toyama City, Toyama Prefecture, CIC Building 1F
Opened: April 15, 2026
Hours: 10:00–20:00
Closed: Follows the operating hours of the CIC Building
Access: About a 2-minute walk from JR Toyama Station
Website: https://kumikoza.com/
