Tokyo-based architecture firm Kengo Kuma and Associates made its own, minimalist version of Lego bricks.

Unlike standard Lego bricks, which are plastic, Tsumiki pieces are made from Japanese cedar.

And unlike the brick-shaped Lego blocks, Tsumiki blocks are shaped like little letter “A”s without their crossbars.

Tsumiki means "building blocks," and has been around in Japan forever. Traditionally, however, those blocks are exactly that: blocks of wood without mechanisms for snapping together.

Kuma’s Tsumiki are more in line with the principles of contemporary Japanese architecture.

Plus, they follow one of the most basic rules of geometry, that the triangle is the strongest shape.