This 389,310 square foot office building sports a number of features including 24 hour access, a sky terrace, fitness center, showers and lockers, and a concierge desk at the front. 221 Main St is a modern 16-story Class - A high rise in the premier South of Market location of the Spear Street corridor. The building features an unparalleled amenity package with an abundance of outdoor space and is LEED Platinum certified.