Thousands of Mexican Free-Tailed Bats soar around an abandoned storm drain at sunset each summer.

This historic national park is covered in the stunning ruins of red rock pueblos.

A stealthy Apache hideaway that became the haunting site of a mass grave.

Ancestral Puebloan ruins, natural arches, and box canyons abound in this seldom-visited corner of Monument Valley Navajo Tribal Park.

Eons ago, a rushing lava river formed this pristine passage through solid rock.

See massive fossils that are over 200 million years old in northeastern Arizona.

Ninety feet off the valley floor is an ancient dwelling put under protection of the U.S. government by Teddy Roosevelt.

This 4,000-foot-diameter hole is touted as "the most well known, best preserved meteorite crater on Earth."

Explore the largest pure gypsum deposit in the world, and go dune sledding while you're at it.

The land is full of geologic eye candy, such as otherworldly spires, mushroom-shaped hoodoos, and prehistoric fossils.

The crypts of Capuchin friars decorated with the bones of over 4,000 friars, including an entire "crypt of pelvises."

This dramatic landscape hidden on the Isle of Skye looks as though you've stepped into the magical realm.

The history of occult science is turned into a creepshow at this lurid Prague tourist attraction.

Dramatic river bend surrounds a natural red-rocked pedestal.

The installation’s official name, “You Who Are Getting Obliterated in the Dancing Swarm of Fireflies,” says it all.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

See a full-scale whale skeleton and experience the captivating culture of Alaska’s Native people at this heritage center in east Anchorage.

A 30-mile-long glacially-carved canyon leads to a massive pair of glaciers.

11,500 year old little girl found buried in an ancient fire pit.

A morbid gateway to an Alaska town prides itself on the hunting history it represents.

The sculpture's largest spire points directly toward the North Star.

America's smallest "national forest" has only 33 trees.

Low tide reveals 8,000-year-old rock carvings in Southern Alaska.

An Alaska livestock farm devotes itself to harvesting wool from creatures that once ran with mammoths and sabertooth tigers.