Fort Christian Charlotte Amalie, U.S. Virgin Islands (part of Saint Thomas Guide)

Tucked away in the vast reaches of the huge rust-colored Fort Christian are museum displays, including period furniture and military hardware, that reflect the island's history. Under construction from 1672 until its completion in 1680, it is the oldest standing structure in St. Thomas. A survivor of the numerous fires and hurricanes that several times devastated Charlotte Amalie, the fort was subsequently used as a governor's house, an administrative center and, until 1983, as the island's jail. Admission is free.