Toward the northwestern end of the park is Castle Clinton, the often-repurposed last remnant of the defensive works which inspired the name of the park; the former fireboat station Pier A; and Hope Garden, a memorial to AIDS victims.
Di ujung utara taman ini terdapat Castle Clinton, sisa-sisa terakhir benteng pertahanan yang menginspirasi nama taman ini; Pier A, bekas terminal kapal pemadam; dan Hope Garden, tugu peringatan korban AIDS.