what's at the center of the pentagon
The Pentagon The Pentagon is the world's largest office building, with about 6,500,000 sq ft (600,000 m2), of which 3,700,000 sq ft (340,000 m2) are used as offices.[6][7] Approximately 23,000 military and civilian employees[7] and about 3,000 non-defense support personnel work in the Pentagon. It has five sides, five floors above ground, two basement levels, and five ring corridors per floor with a total of 17.5 mi (28.2 km)[7] of corridors. The Pentagon includes a five-acre (20,000 m2) central plaza, which is shaped like a pentagon and informally known as "ground zero," a nickname originating during the Cold War on the presumption that it would be targeted by the Soviet Union at the outbreak of nuclear war.[8]
Barclays Center Barclays Center is a multi-purpose indoor arena in the New York City borough of Brooklyn. The arena is part of a $4.9 billion future business and residential complex now known as Pacific Park.[6] The site is at Atlantic Avenue, next to the renamed Atlantic Avenue–Barclays Center subway station on the 2, ​3, ​4, ​5​, B, ​D, ​N, ​Q​, R and ​W​ routes, as well as directly above the LIRR's Atlantic Terminal.