American designer Brandon Clifford has drawn inspiration from megalithic architecture to create concrete sculptures that join together like a jigsaw puzzle. More about Brandon Clifford creates heavy concrete sculptures that sway and roll
Intersecting wood-clad volumes create a playground for children in a Massachusetts suburb to scurry through, clamber over and zip-wire from. More about Matter Design's architectural play equipment encourages kids to crawl, jump and fly
A new installation by Boston-based architecture studio Matter Design features a wooden box with sculptural interior walls that radiate different temperatures, creating an "intimate and contradictory set of experiences". More about Matter Design's Microtherme conceals voluptuous concrete forms within a wooden box
This half-scale model of a spiral staircase by American studio Matter Design is made from concrete treads that slip neatly over each other. More about Helix Staircase by Matter Design