One Financial Center is a modern skyscraper adjacent to Dewey Square in the Financial District of Boston, Massachusetts. Built in 1983, it is Boston's 7th-tallest building, standing 590 feet (180 meters) tall, and housing 46 floors. An unusual 90 ft (27 m) tall glass-roofed lobby, known as the atrium, occupies the first two stories.
The remaining stories are offices, home to a number of law firms, Certified Public Accountants, and financial services companies. The building is located on a historic 1.23-acre (5000 m²) triangular piece of land next to South Station and the Federal Reserve Bank Building, joining the Fort Point Channel area with Boston's Financial District.
The tower is topped off by two radio masts. Including its radio masts, One Financial Center is the 3rd-tallest building in Boston (when measuring by pinnacle height), rising 683 feet (208 meters). Apart from the masts and their supporting cables, the roof of the building is flat with no crown.