6. James J. Walker Park

James J. Walker Park  (or Jimmy Walker Park) in the West Village today features a recreational fields and courts. In a previous incarnation, the park contained a beautiful Italianate sunken garden, lagoon, and gazebo, all designed by the firm Carrere and Hastings. Before becoming a park, the land was once St. John’s Cemetery, the burial ground for Trinity Church. While the graves were supposedly relocated to 155th and Broadway, the Daytonian in Manhattan blog claims that most were not: “Under the feet of  scores of children playing ball and frolicking in a water spray, approximately 10,000 bodies lie forgotten.”