The US Naval Cemetery is located in Port Mahon on the island of Minorca, Spain. It dates back to the early 19th century and was established during a period when the United States Navy used Minorca as a base for operations in the Mediterranean. 

Port Mahon served as a base for the U.S. Navy's Mediterranean Squadron, and it included facilities like a naval hospital and storage for supplies. Additionally, there was a floating naval school associated with the squadron, which some consider a precursor to the U.S. Naval Academy established later in Annapolis

The cemetery primarily served as a burial ground for American sailors who died from illness or accidents while stationed there. It contains the graves of 20 known U.S. Navy sailors, one Navy wife, and others of various nationalities. The cemetery also holds historical significance due to its connection with Admiral David Farragut, the first admiral of the U.S. Navy, whose father was born in Minorca.

Over time, the cemetery fell into neglect but was later restored with the help of the Spanish government and the Navy League of the United States. Today, it is maintained as a historical site and is visited annually for ceremonies honoring those interred there.