The Double is a minimalist residence located in Amsterdam, Netherlands, designed by WAA. The building is composed of two volumes, which together contain 45 units separated by an exterior communal courtyard garden on the roof of the ground floor. Most units have direct access to this communal area, and the units that abut it carve their terraces from it. The front volume–which is six stories high–faces the street, while that of the rear–which is five stories high–overlooks a little trafficked canal. Nearly all units are outfit with polyurethane floors.