Seller of surplus nuclear research materials.

An impressive collection of over 50,000 minerals including moon rock from the Apollo 17 mission.

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

In the remote high desert of New Mexico, a strange array of poles beckon fury from above.

An abandoned amusement park based on the popular 1940s Red Ryder comic strip.

A burnt-out motel with priceless Native American artwork in the basement, redeveloped into apartments.

The most powerful laboratory radiation source in the world pulses with 1,000 times the electricity of a lightning bolt.

This centuries-old pueblo church houses the body of a Franciscan friar who is said to be a rare "incorruptible" corpse.

A unique geological area spiked with wind-carved rocks that resemble teepees.

A warm desert spring holds one of the rarest species on earth.

One of the American Southwest's most extensive collections of Navajo rock art.

A slab of sandstone covered with mysterious 1,000-year-old rock carvings from a vanished North American culture.

Rare recess caves fill this unbelievably beautiful Ohio park.

A collision of human error and natural geothermal pressure created this rainbow-colored geologic wonder.

The only diamond mine in the world where you can keep what you find.

A tiny museum in Esperance, Australia, displays a bunch of space debris from NASA’s Skylab.

A prehistoric rock shelter that's literally in someone's backyard.

The first custom-designed building to showcase the works of Dale Chihuly is a wonderland of glass and light.

These magnificent city walls rise from the barren sun-baked Spanish plains like something straight out of a fairytale.

A charming 17th-century alley is lined with secondhand bookstores and antiquarian shops.

These light, hollow rolls have been linked to Acadia National Park since the 1890s.

This otherwise ordinary close on the Royal Mile constituted the end of the world for Edinburgh’s poorest residents.

Ruins of a 13th-century fortress perched above a breathtaking Mediterranean bay.

This small Catskills village has six independent bookstores and more bookshops than restaurants.