6. St. Mark’s Church-In-The-Bowery, Manhattan

With just 1,750 people buried here, St. Mark’s Church-in-the-Bowery is the oldest site of continuous worship that is still active in New York City, and the second oldest church. Most significantly, Peter Stuyvesant rests here. Though this cemetery lacks conventional tombstones, there are decrepit stone slabs marking underground vaults where wealthy New Yorkers lay.