101 Second Street is an office tower located in the South of Market district in San Francisco, California on Mission Street. The 108 m (354 ft) building was completed in 2000 and has 26 floors with 388,000 sq ft (36,000 m²) for offices. It is known for its glass-clad, four-story atrium which functions as public space. Its art pavilion has included commissions by painter Charles Arnoldi and sculptor Larry Bell.