What's left of Fort Monroe's Water Battery. This casemated battery was built in 1832, and was originally connected to the rest of the fort, on the inside of the moat, protecting the seaward approach to Fort Monroe. This battery was obsolete by the 1890's, when it became plain that its relatively teeny, old-school guns were pointless contrivances next to the modern 10" disappearing guns that were sprouting up at nearby Battreries Irwin, Church and DeRussy.