Prison Ship Martyrs' Monument, undated postcard.

During the Revolutionary War, more than 11,500 prisoners of war died aboard British ships anchored in nearby Wallabout Bay. The prisoners died of overcrowding, contaminated water, starvation, and disease, and either had their bodies thrown overboard or were hastily (and poorly) buried at the shoreline. Because of this callousness, thousands of body parts and bones washed up on Brooklyn’s waterfront for years to come. In 1808 the remains were first entombed in a crypt on Jackson Street (now Hudson Avenue), near the Brooklyn Navy Yard.

In 1873 the prison ship martyrs remains were moved from their location to a vault in the park that was created at the site of a former Revolutionary War fort (then Washington Park, today Fort Greene Park). In the late 19th century various constituencies advocated for a permanent memorial. In 1905 McKim, Mead and White created the design for a new entrance to the crypt, including a wide staircase leading to a plaza from which a massive Doric column rose.

The Stanford White-designed monument was 149-foot-tall and crowned with a bronze lantern, created by sculptor Alexander Weinmann (who also designed four bronze eagles for the base). It was dedicated in 1908 with the President-elect William Howard Taft in attendance. Between 1937 and 1948 an elevator allowed visitors to ascend the column.

Over the last century, the monument has undergone a series of vandalization and restorations. The eagles were removed in the 1960s due to continual defacement. After smaller restoration efforts in the 1940s and 1970s, a major effort was undertaken to repair, clean and conserve the monument, the crypt, and the surrounding plaza. The newly restored plaza (with modern lighting and two original and two replica eagles) was unveiled in 2008, a century after its original dedication.