2. The Hidden Survey Bolt in Central Park
This bolt is believed to be one of the original survey bolts from when the Manhattan grid was first planned in 1811. As Central Park was not a part of the original plan, street intersection points may have been marked but left to remain since no intersection was actually built here. The bolt is known to be in the park, but the exact location is kept a secret for fear that it will be stolen or destroyed. After some intense searching of both the internet and park, you might be able to find it like we did. We’ll take you to see the bolt on our upcoming tours of Untapped Central Park!