One Financial Center is a modern skyscraper adjacent to Dewey Square in the Financial District of Boston, Massachusetts. Built in 1983 by Rose Associates, it is Boston's 9th-tallest building, standing tall, and housing 46 floors. An unusual 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 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. During the Big Dig (a project to create a new underground highway under the centre of Boston), extra care was needed to avoid subsidence of the soil under the building, as construction was underway just from the building's foundation. The building was constructed on soil rather than bedrock due to the geography of the site. The tower is topped off by two radio masts. Including its radio masts, One Financial Center is the 4th-tallest building in Boston (when measuring by pinnacle height), rising . Apart from the masts and their supporting cables, the roof of the building is flat with no crown. Tenants Citizens Bank HarbourVest Partners Loomis, Sayles & Company Mintz, Levin, Cohn, Ferris, Glovsky, and Popeo Technip Pandora Radio See also List of tallest buildings in Boston References External links One Financial Center Skyscraper office buildings in Boston Office buildings completed in 1983 Jung Brannen buildings Pietro Belluschi buildings EverBank Financial District, Boston