well as the existing Sheraton Hotel Boston at Copley Place, which combined was considered the first mixed-use development in New England and awarded the Urban Land Institute's Best Mixed Use Development Award in 2006. By the fall of 2007, another major development was completed along Boylston Street at the Prudential Center complex: the Mandarin Oriental, Boston hotel. In 2016, 888 Boylston Street, a 17-story LEED Platinum-certified office building, completed the last site of the Prudential Center complex. The complex has direct indoor connections to two MBTA stops, Prudential and Back Bay. Prudential is on the Huntington Avenue side of the building directly outside the Colonnade Hotel and is the first station on the Green Line E branch after its split from the main line at Copley Square. Back Bay is a stop on the Orange Line and is accessible to the complex via the Copley Place mall, to which it is attached by a walkway over Huntington Avenue. Back Bay is also served by Amtrak, including the Acela high-speed train. The Prudential Center serves as one of three starting locales for the Boston Duck Tours, a popular tourist attraction in the city. In November 2016, a Eataly location was opened, replacing the existing food court. The "Top of the Hub" restaurant, which had occupied the 52nd floor since December 1965, was scheduled to permanently close on April 18, 2020, but was closed a month earlier due to the COVID-19 pandemic. Antenna and broadcast tenants The main rooftop mast supports two FM master antennas, and a top-mounted television antenna previously used by WBPX. The upper master antenna, manufactured by Electronics Research, Inc. (ERI), serves WZLX 100.7, WWBX 104.1, WMJX 106.7, and WXKS-FM 107.9. The lower master antenna was installed in the late 1990s, also by ERI, and serves WBOS 92.9, WBQT 96.9, and WROR-FM 105.7. The FM stations each transmit with approximately 22,000 watts ERP and in HD Radio. The roof also has a smaller tower with standby antennas for WZLX, WWBX, WROR-FM, WXKS-FM. All 7 FM broadcast tenants have backups located in Newton as well. The studios of FM station WBCN occupied space on the 50th floor for a period in the 1970s and WEEI (AM 590 and FM 103.3), when it was CBS Radio owned and operated, had its offices and studios on the 44th floor in the second half of the 1960s. List of tenants Notable tenants of