A layered tribute to the work of mosaicist Isaiah Zagar.

One of Philadelphia's largest murals resides hidden under this bridge.

Tour the dark and beloved poet's former cobwebbed basement, which may have inspired "The Black Cat."

A museum dedicated to the strange and extravagant costumes and memorabilia of the mummers, a tradition older than Philadelphia itself.

Old neon signs from the City of Brotherly Love provide a snapshot of the city’s evolution.

A spur fit for a giant sits just off Highway 281 in Texas.

An underwater city for the dead.

This blowhole is supposedly caused by a trapped monster.

This industrial area was the dumping ground for massive amounts of trash, some of which washes up as tiny bits of sea glass.

This former luxury resort in Kaua'i is now an abandoned relic.

Submerged lava formations create incredible waterworks.

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