The renovated building at 32 Quincy Street united the three museums in a single state-of-the-art facility designed by architect Renzo Piano, which increased gallery space by 40% and added a glass, truncated pyramidal roof.[9] In a street-level view of the front facade, the glass roof and other expansions are mostly hidden, largely preserving the original appearance of the building. The renovation was supervised by LeMessurier Consultants[citation needed] and Silman Associates.[2]