A spiritual vortex among the red rocks in Sedona.

Under the right circumstances, this waterfall in Yosemite briefly turns a luminescent fiery orange.

A Circus legend leaves an unexpected endowment.

Macabre astrological automaton clock dating to the late 1400s.

Despite attempts by local police to discourage it, Beatles-inspired graffiti has been a means for artists to air grievances for decades.

Every day a troupe of pampered water fowl walk the red carpet to their favorite fountain.

These enduring murals depicting a distinctly Marxist tribute to capitalism could not even be defeated by McCarthyism.

The highest point in Washington state is a volcano covered in glaciers.

Underneath the city that invented pilsners are a series of historic tunnels that have been storing beer for centuries.

Giant novelty guitars now mark the spot where Robert Johnson is said to have sold his soul to the devil.

The highest bridge in America was built for an almost unnervingly small amount of money.

Experience the hysteria of a 17th century witch hunt through goofy reenactments and wax dummies that should probably be burned at the stake.

The Denver airport is guarded by a 32-foot-tall sculpture of a demonic horse.

Known as the "Cross At The Crossroads," this massive metal cross is just short enough to avoid the FAA.

A bygone village occupation lives on via this quaint public chalkboard.

This monument on Breed's Hill proves that one of the most famous battles of the Revolutionary War is misnamed.

By day this New Orleans square is for pedestrians, but by night it is a kingdom of kittens.

A fascinating insight into daily life in the Eastern Bloc.

A sealed test tube said to hold Thomas Edison's dying breath was given to the inventor's friend and mentee, Henry Ford.

Built by prisoners of war, the largest small-scale model ever built includes eight miles of tiny streams that now sit abandoned.

The house where John Wilkes Booth conspired with his co-conspirators.

This iconic science fiction house still looks like something from the future.

The bunker where Hitler took his own life is hidden under this deliberately ordinary parking lot.

This protected area in Lake Huron contains some of the world’s best-preserved shipwrecks.