A once-glowing grotto at the bottom of Waikapalae Wet Cave.

Impressive sink holes fill this untouched old-growth forest in the Bahamas.

This staircase in a lush tropical grotto was built by enslaved laborers and renamed to honor Queen Victoria's role in ending slavery in the British Empire.

This public space is speckled with the eerie remnants of a defunct amusement park.

Antiques and recycled art surround this cabin designed to resemble a 19th-century schoolhouse.

An American flag was erected for every day that passed during the Iranian Hostage Crisis.