Piercy&Co has crafted a unique house in a historic district near London's Kew Gardens. It consists of two large prefab volumes clad in a rugged weathering steel and connected by a glass-encased stairwell. The steel's deep, rusty hue matches local brick buildings, while the glass stairwell lets sunlight into a private courtyard. That central stair, along with massive swinging doors that open to the courtyard, are for play as well as convenience: in the words of the architect, they create "an internal landscape of alternative routes, levels, and spaces—many of which are aimed more at children than adults." We think this is definitely a design fit for all ages.