A tunnel with windows, so you don't miss out on the impressive views.

Settled by the Church of Jesus Christ of Latter-day Saints in 1859, this abandoned frontier town has appeared in several films.

Although it also features red, orange, and variegated cliffs of Navajo Sandstone, this state park is often overshadowed by its more famous neighbor.

Fans of vintage Vegas, kitsch, and toy pony-based gambling now flock to a casino called The D.

Las Vegas's very own 40-foot-tall fire-spewing praying mantis.

The first outlet of Canada's biggest fast-food franchise has been slinging doughnuts since 1964.

Originally built as a promotional giveaway, this suburban house was designed to be an IRL version of the Simpson home.

Dyed by iron oxide over centuries, these sandstone rocks rise thousands of feet into the sky.

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

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

The hotel where Martin Luther King Jr. was shot is now a museum dedicated to his work.

This replica of the Greek structure is in the heart of Nashville.

The mysterious wonder of an underground waterfall is illuminated by multicolored lights.

These sub-farmland caves are home to a majestic stalactite known as the "Crystal King."

An urban laboratory.

Scores of vintage street lamps shine along L.A.’s Miracle Mile.

These delicate buggers are some of the rarest fossils that have bubbled up from the Tar Pits.

America's most famous piece of self-built architecture.

The legendary building that needed ghostly approval before being built.

Designed by Maya Lin, the memorial honors 41 individuals who died fighting for equal rights between 1954 and 1968.

The world’s first penitentiary, meant to be humane, drove men insane.

One of the longest water bridges in the world was built over a supposedly haunted swamp in Louisiana.

The only example of a Paris Métro sign in use at a subway station outside of the French capital. 

Once a favorite playground for the world's most illustrious guests, Hotel Nacional's secret weapons and bunkers reveal a more menacing side to its golden history.