5. Central Park Blockhouse

Central Park Blockhouse in New York City
Courtesy of the Central Park Conservancy

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.