8. There is a Secret Penthouse at the Chelsea Hotel

In 1996, David Bard, son of the noteworthy hotel manager Stanley Bard, filed for a 546 square foot edition to a studio on the top floor of the hotel. According to Curbed NY, this addition was approved by the Landmarks Preservation Commission was completed in 2001. Cottage-like additions to the tops of buildings are not uncommon in New York City – here are 10 other quirky ones.