3. Citi Field

Home to this year's Major League Baseball All-Star Game, Citi Field is a massive venue for non-baseball events as well. The 43,000-seat ballpark, which opened in 2009, has multiple spaces for corporate event rental. The largest space is the Jackie Robinson Rotunda, the 19,000-square-foot entrance with a capacity for 1,500 people. Elsewhere, the 10,000-square-foot Excelsior Club holds 600, the Acela Club restaurant seats 350, and an auditorium has space for 150.
Photo: Marc S. Levine