An abandoned facility that has become a place of ritualistic satanic worship, or so rumor has it.

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

This secluded aqua waterfall in the Grand Canyon is the perfect swimming hole, and the Havasupai tribe's fiercely protected natural wonder.

Rippling sand dunes frozen in the Arizona rock.

This small, unassuming street is now a canvas for color and creativity.

Come for the pizza, stay for a performance on the world's largest theater pipe organ.

These free-roaming horses were once destined to disappear from the land.

Giant pinnacles in the sun-scorched lands of Southern Utah have been nicknamed "white ghosts."

These mid-century motels once housed the workers who built the Glen Canyon Dam.

Secret Swing.

A monument to the 17,000 Chinese who worked and died to build Canada's Pacific Railway.

One of the largest underground systems runs under Canada's largest urban center.

This "Palace of Purification" has made many film appearances as a dark and sinister headquarters.

This unusual structure may be on its way to becoming a cultural landmark in Toronto.

Smallest house in Toronto sits on a lot meant to be just wide enough for cars to drive through.

Willy Wonka would love this weird half-a-home.

Lost subway station nestled beneath Toronto's busy commuter line.

A botanically themed auditorium blooms within the world’s last operating double-decker theater.

One of Canada's most incredible rare book collections holds hundreds of thousands of gorgeous tomes that the general public can touch.

A book collector's dream, this Toronto bookstore has the world's first "Biblio-Mat," a random book vending machine.

The underground sanctuary of a mysterious ancient cult.

This shining multicolored metro station deep under Naples is said to be the most beautiful in Europe.

A subterranean shelter remains intact under a busy Paris railway station.

"In the Dark" Restaurant in Paris offers dinner in complete darkness.