More Trees

Tsumiki Stacking Blocks


Japan's Answer to the Lego

Any architect will tell you that, structurally, a triangle is the strongest geometric shape. Architect Kengo Kuma has taken this wisdom and rendered it into a playful and interactive building set: Tsumiki (which means "toy blocks" in Japanese).

Satisfyingly smooth to touch, each piece is crafted with Japanese cedar. Nifty notches cut into the tips of each block allow them to nestle atop the other. They make great building blocks for the inquisitive mind, offering infinite creative possibilities for any age.

"Tsumiki played a big role in my life, which affected my career as an architect" - Kengo Kuma


  • Designer: Kengo Kuma
  • Size per piece: L 4.3 x W 4.7 x D 1.5 in (11 x 12 x 4cm)
  • Available in 7 piece, 13 piece and 22 piece sets
  • Material: Japanese cedar from Miyazaki Prefecture
  • Made in Japan

(gift wrapping add-on available)

About More Trees

More Trees is a forest conservation organization founded by the late Japanese musician, Ryuichi Sakamoto. The organization aims to connect cities and forests through programs and initiatives that advocate for sustainable forestry.