This small structure located on the downtown greenway in Boston incorporates varying materials to assist the occupant in making a smooth transition from the exterior to interior spaces. The materials change in translucency effecting how the space is perceived. Bikes are hung from the ceiling along the curtain wall to cast shadows against the walls and floors while interrupting and blurring the translucency from outside to inside. The entrance at street side is open and bright while the locker and shower rooms, at the opposite end are closed and private.