The only royal palace on U.S. soil has been a territorial capitol, a military headquarters, and a prison for a queen.

The air force base preserves its scars from the Japanese attack on Pearl Harbor.

An authentic replica of an Asian temple and garden hidden amongst the natural beauty of Hawai'i.

This World War II-era bunker is now packed with posters and props from movies and TV shows filmed nearby.

A turn-of-the-century architectural marvel built on healing mineral springs and salt licks.

This memorial to the Mercury Seven astronaut stands at the site of his former elementary school.