Who designed the Guggenheim Museum New York’s 1960 addition?

William Wesley Peters designed the Guggenheim Museum New York’s 1960 addition.

The addition was built after the main Frank Lloyd Wright building opened. Peters was an architect who worked closely with Wright and had served as president of Taliesin Associated Architects. The extension provided additional space while remaining connected to the original museum complex on Fifth Avenue.

The original building is the work most strongly associated with Wright, whose spiral ramp and rotunda define the museum’s public image. That association can make it easy to overlook the later addition and attribute every part of the complex to Wright.

The museum has undergone further renovations and alterations over time, but the 1960 extension is specifically associated with Peters. Questions about the building therefore require distinguishing the original structure from later expansions.