Crystal clear lake with a shoreline of travertine located in a Colorado canyon.

Fine dining in the bizarre world of Lewis Carroll.

Home of an evil witch famous within southern folklore.

One man has carved a number of natural New Mexico caves into psychedelic sandstone temples.

Keshwa chaca, among the last handwoven Incan bridges, crosses Apurimac Canyon in Peru.

This 1,300 year old monastery built atop a single rock was once only accessible depending on the whims of the tide.

Northern Ireland's Brobdingnagian stepping stones.

A hotel and restaurant serving as the mecca of kitsch.

The unique waterfall in Iceland's south features a backdrop of geometric black lava columns.

This abandoned amusement park was built on a site with a dark history.

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

A natural gas leak provides a flickering flame beneath a waterfall.

A roaring, awe-inspiring double cascade of icy water flows through woodland Oregon like something out of a Tolkien novel.

The world's only museum devoted to the wonders of fluorescence.

Site of a former hidden treehouse in New Orleans.

The first declared National Monument in the United States.

A trash dump made beautiful by nature's power.

Monasteries on rock pillars, once accessible only by frayed ropes.

Two stunning 17th-century libraries and a cabinet of curiosities.

The only structure left with direct ties to the Salem witchcraft trials of 1692.

Aqueducts have dramatically changed this old lake, now home to tufa towers and its very own species of tiny brine shrimp.

This structure among the trees was the result of divine inspiration.

A battle between nature and architecture in the Cambodian jungle.

An Australian lake whose pink hue defies scientific explanation.