London's creepiest cemetery was once the site of dueling magicians and mobs of stake-carrying vampire hunters.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

A crumbling hospital from the 1850s on Roosevelt Island.

The haunting "Hell House Altar" is one of the few remnants of an abandoned college that has been a magnet for local legends.

This jaw-dropping 19th-century bridge uses its reflection to form what appears to be a perfect circle.

The island of Lanai in Hawai'i is a paradise for cats and cat lovers.

This neon blue river gets its color from a unique mix of bacteria and volcano minerals.

This frequently-photographed waterfall takes only a short hike to visit.

A little-visited waterfall in an otherworldly landscape.

The ruins of an 11th-century Norman castle with a rare, perfectly circular shape.

A magical sinkhole on the Yucatán Peninsula is adorned with mini waterfalls and hanging vines.

Located just behind a quiet residential neighborhood, this is ground zero for the Salem witchcraft hysteria of 1692.

Lines from a walking song are etched into a rock in Natural Bridge State Park.

One of the most scenic falls in Massachusetts has a history of death and grim legend.

A Manhattan courthouse hides a small but scathing memorial to Holocaust injustice.

A heartbreaking monument showing the last morning in the life of Jane Griffith.

America's first serial killer rests in anonymity.

A stunning, two-tiered waterfall made famous by poets, artists and the legend of a ghost dog.

The deepest lake in the United States, and once the site of epic destruction that lives on in legends.

The first declared National Monument in the United States.

The site of the climactic scene from the classic horror film is now a historic landmark.

This secluded aqua waterfall in the Grand Canyon is the perfect swimming hole, and the Havasupai tribe's fiercely protected natural wonder.

This whimsical Oz-themed park had a wonderful impact on the surrounding neighborhood.

Under the right circumstances, this waterfall in Yosemite briefly turns a luminescent fiery orange.