Last week the city of Antwerp opened the Museum aan de Stroom (MAS), an unusual red sandstone and glass building that looks like a helter skelter stack of large cantilevered boxes. Designed by Rotterdam-based architect, Neutelings Riedijk, the building takes the form of a squared-off spiral creating ten levels each offering different views of the city and Scheldt River through its floor-to-ceiling undulating glass walls. The exhibition spaces are located at the building’s core and are connected by a walkway and escalators that will remain open to the public when the museum is closed. On the top floor, the building houses a fine dining restaurant, event space and viewing terrace.