The beloved statue at the National Academy of Sciences is oh so inviting to sit on.

The "mysteries" of this quintessential roadside oddity were almost destroyed by neglect but were saved by fans of kitschy wonder.

This float factory takes the mask off of Mardi Gras and lets visitors see where the magic happens.

Back in 1952, you could get a mushroom cloud chaser with your atomic cocktail.

The winding route passes through an enclosed alleyway, two tunnels, and leads to the White House basement.

Exact replica of the ancient monument, but much, much lighter.

The bullet-riddled wall from the St. Valentine's Day Massacre, bloodstains enhanced for your viewing pleasure.

Fittingly, America's museum of architecture is itself a magnificently designed old building.

A tribute to Ponce de Leon's supposed quest for eternal youth.

This fast-food outlet is the only space and UFO-themed McDonalds in the world.

An organ located deep within a cave, whose "pipes" are the geological features of the cave itself.

During the Industrial Revolution this “Temple of Invention” was full of intricate miniature machines and gadgets.

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

This massive redwood tree has a hole in the base big enough to drive through.

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

The former home of the Nobel Prize-winning American writer is now home to dozens of six-toed cats.

This museum devoted to the gothic author holds such interesting ephemera as his socks and walking stick.

Outsider art meets paleontology at this roadside reptile repository.

A sculpture made of 10 Cadillacs as a monument to the "Golden Age" of the American automobile.

An homage to everyone's favorite prehistoric cartoon family.

Strange red rock formations that have been attributed to a higher power for hundreds of years.

A mysterious castle built as a monument to lost love.

The second oldest continuously operating bar in Louisiana.

Welcome to old Florida, where a 1940s mermaid show is still enchanting visitors.