5. Central Park Blockhouse

Did you know that the oldest structure inside Central Park actually predates the park itself? In 1858, New York City held a design competition for the creation of Central Park, but the Blockhouse dates back to the War of 1812, when it was built as a fortification against the invading British soldiers. It’s located in a rocky outcropping in the park’s North Woods.
During OHNY 2021, you can get a rare glimpse at this off-limits site thanks to the Central Park Conservancy. The Blockhouse will be unlocked and open to the public from 10 a.m. until 4 p.m. on Saturday. There will be guides on hand to answer questions and explain the site’s history.