4. There Are Hidden Silos
In an area closer to the beach, there are two smaller silos, Battery Kessler and Battery 220 that are now buried under dunes. Both batteries are made of reinforced concrete. Battery Kessler, originally known as West Battery, was built in 1917 and carried two 6 inch M1900 guns mounted on concrete gun blocks. The guns were actually sent to France in 1917 and returned to Fort Tilden in 1919.  Battery 220 was built in 1941 and carried two 6 inch M1903-A2 rapid fire guns. Both sets were medium-range, rapid fire guns that could reach a distance of 15 miles.