Frank Lloyd Wright's most iconic home dangles over a Pennsylvania waterfall.

The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.

Where manatees are the snowbird vacationers in these balmy Florida springs.

The hike through a narrow river flanked by the 2,000-foot-tall walls of Zion Canyon is one of the best in the world.

An emporium for the weird, creepy, rare, and just plain gross.

Stroll through a wonderland of stupendous moss-covered trees.

For two weeks every June, fireflies in the Smoky Mountains perform an astonishing light show.

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

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

Dramatic river bend surrounds a natural red-rocked pedestal.

Most-visited and most-photographed slot canyon in the American Southwest.

A huge musical instrument played by the ocean.

A room in New York City that contains 250 cubic yards of dirt worth a million dollars.

La Monte Young and Marian Zazeela's "Dream House" will immerse you in an ever changing world of sound and light.

This Toronto garden collects stares and tchotchkes in equal measure.

This single-track road rewards brave drivers with stunning Scottish scenery.

A renegade art installation in a small Vancouver park is now officially sanctioned by the City Parks Department.

This expansive bridge in the Canadian wilderness was originally just built for friends.

Traditional 15th century Chinese garden in the middle of Vancouver.

Marvel at this turn-of-the-century masterpiece that has been turned into a rather stately supermarket.

Funded by John D. Rockefeller, this is one of the earliest, and most beautiful, shopping arcades in America.

The heroic sled dog of the 1925 serum run is preserved in taxidermy.

A history of tragedy and a pile of eerie stories have contributed to this house's consistent ranking as one of the most haunted places in Ohio.

The angel of death appears to weep black tears at this grave marker.