The last all-sail warship built by the US Navy, the USS Constellation is permanently anchored in Baltimore's Inner Harbor as a floating museum. Visitors can enjoy hands-on activities, demonstrations and tours around the ship. These include learning how young boys served as "powder monkeys", seeing how the ship was powered, propelled and controlled and learning about the US$7.5 million restoration of the vessel.
Built in the 1850s, the USS Constellation served the Mediterranean during the Civil War, protecting US merchant ships from confederate raiders and picking up slavers (illegal slave ships), before being stationed at various Atlantic coast navy yards. It came to Baltimore in 1955.