The Watervliet Arsenal is the oldest continuously active arsenal in the United States, operated by the US Army. Founded in founded in 1813 to produce weapons for the War of 1812. Since 1966, designated a National Historic Landmark. Still in use today as a manufacture of artillery gun tubes, cannons, mortars, and tank gun barrels.
Watervliet Arsenal produced US Army coastal artillery and mortars emplaced in coastal defense and forts prior to the Pacific War including the 12" M1890
carriage, 10" (254mm) M1895 gun and 14" M1909 gun. Many were emplaced in the Philippines fortifying Corregidor Island and Fort Drum (El Fraile).
Watervliet Arsenal Museum
The museum and archives are located in "The Iron Building" a historic building. Open to the public, includes a tour of portions of the arsenal facility.