Architectural copyrights are limited in nature, generally just to the blueprints/design. If a building is unique and known enough (like the Empire State Building or the Chrysler Building in NYC), then the shape of the building could also fall under trademark law, also.
Walt Disney Concert Hall – Los Angeles. Gehry was shortlisted to devise a new home for the Los Angeles Philharmonic in 1988; the project, the Walt Disney Concert Hall, finally opened in 2003. - Frank Gehry Buildings and Architecture Photos | Architectural Digest
The Walt Disney Opera House built by Frank Gehry in Los Angeles in 2003 highlights his signature contemporary style of sweeping metallic surfaces. The interior features one concert hall with excellent acoustic qualities due to its spatial and material qualities.