We’ve got the USS Constellation (Baltimore) and the USS Constitution (Boston as I recall). Among the oldest actual fighting ships in the world, and in very good condition. Been on both.
I also have a souvenir coin made from a piece of the propeller of the USS Olympia (Spanish-American War), as well as photos of myself and a friend (Cub Scout visit) to the USS Pike submarine, WW2, also in Baltimore, and myself under the 12 inch guns of the Light Cruiser USS Baltimore, about 1952.
When you see these ships and read about them, you are learning about the creation of America, the defeat of the Spanish fleet under Adm. Dewey at Manila Bay, and the defeat of the Axis powers during WW2.
Anchors away my boys, anchors away!