The world's only international cryptozoology museum is host to an unrivaled collection of mysterious objects.

This prehistoric sinkhole lured exclusively male mammoths to their death, much to the delight of science.

This replica stave church looks like a piece of Norway was simply plopped down in South Dakota.

One of America's first dinosaur parks gives a window into Depression-era paleontology.

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

Walk 2,300 feet above the ground on the "Troll's Tongue."

A thin pane of glass keeps visitors from sliding off this futuristic skywalk.

A stunning silver lining to global warming's gloomy cloud.

Europe's second largest ossuary wasn't discovered until 2001.

Skulls from the plague of 1656 and World War II bombings are united by a cult dedicated to caring for the ancient dead.

This pebble beach is so beautiful that taking its rocks is against the law.

This cave holds a surprisingly colorful variety of geological oddities.

A bizarre house filled with an astounding array of collections.

Gambling, boozing, and yodeling animals cover the walls of this dive bar cum natural history museum.

Giant six-pack could provide one person a six-pack a day for 3,351 years.

Amateur taxidermy museum known for its large collection of white squirrels.

These Great Lakes sea caves accessible by boat in the summer turn into temples of ice reachable by foot in the winter.

This solitary gravestone is separated from the rest in Appleton, explaining why local legends continue to surround it.

These eerie outliers of the lightning bug family glow a mysterious blue color.

An emerald-green grotto just a short trip from Austin.

Handcrafted thermal spa washes away each night with the tide.

The real life Hobbiton, this sheep farm has been forever transformed since being built for The Hobbit film series.

Tubing through a cave lit with glowworms is a magical underground experience.

The Dalai Lama named this New Zealand landscape the "Spiritual Center of the Universe."