This grisly exhibit houses skeletons and weapons from a devastating 14th-century clash.

An officers prison camp believed to be impregnable by the Germans saw over 30 successful escapes.

This natural history museum houses one of the world's largest rat kings, a terrifying jumble of tangled rodents.

The non-native bovine herd was brought in to help conserve these Berlin wetlands.

The frozen bubbles that form on the icy surface of this Canadian lake contain enough methane to create a small explosion.

Climbing this abandoned railway leads to breathtaking vistas of O‘ahu.

This wrecked ghost ship has been rusting on a Greek beach since the 1980s.

Dozens of large-scale, creative, evocative curios from prominent artists dot the calm outdoor space around this major museum.

This verdant, tree-lined Reykjavik graveyard is both enchanting and eerie.

A grotesque collection of wax limbs depicting the symptoms of venereal disease.

Ancient stone dildos and other odd pieces of medical history are displayed at this quirky Cyprus gem.

Once part of an ancient international harbor, it's now an all-you-can-eat shrimp buffet for flamingos and other water birds.

One of the world's largest tanks mimics the experience of watching rare whale sharks, giant rays, and deep sea creatures from the ocean floor.

The highest tides in the world come in and out here twice a day, allowing you to essentially walk along the ocean floor.

The world's seventh-largest coral reef contains an incredible amount of biodiversity.

An underwater restaurant, surrounded by a coral reef.

World's largest cave was only discovered in 1991, and now offers tours to the public.

The world's largest underwater restaurant is submerged off the southern tip of Norway.

This retro underwater observation tower would make the perfect lair for a sea-loving villain.

The remnants of a wooden-hulled fleet built and abandoned in WWI, now home to a thriving ecosystem.

A mountain of conch shells created by centuries of fishermen.

Legend says entire herds of cattle have disappeared within this boulder-strewn landscape.

Historical figures from New York City's Catholic community reside in Midtown.

The largest lake in the Faroe Islands seems to be held hundreds of feet above sea level thanks to an optical illusion.