The "Seinfeld" diner.

The name of this famed hospital was once a byword for the horrors of medical and psychiatric care.

Dedicated to the victims of one of the deadliest hurricanes to strike the United States in recorded history.

In the depths of the Everglades, one man has dedicated his life to studying the elusive Skunk Ape.

Japanese gardens dedicated to the Japanese farmer that refused to throw in the trowel.

The sign that drew attention to a young boy's cucumber stand is now the name of his fruit superstore.

Found: Garden of Eden in Miami-Dade County, Florida.

This sprawling 18th-century cemetery features unique and beautiful gravestones, including one shaped like a tree.

Resonating tubes make music from highway overpass.

A monument to the Mohawk people stands along an old Native American trade route.

This abandoned neighborhood is now a park filled with beautiful trees, wildflowers, and hints of its past.

These magnificent city walls rise from the barren sun-baked Spanish plains like something straight out of a fairytale.

The birthplace of Karl Marx is now a museum dedicated to the communist revolutionary's life and work.

Not to be confused with the iconic New York City skyscraper, this Chicago building is a vibrant hub for artists.

One critic described it as "middle Mussolini, early Ramses, and late Neiman-Marcus." Another called it an architectural "natural disaster."

While most wind tunnels test scale models, the "Cave of Winds" was large enough for actual airplanes.

The little-known, 300-year history of the area includes former lives as a bustling tobacco port, parking lot, and industrial dump.

Those with a sharp eye can find the hidden image of a German Shepherd on the memorial's Mural Wall.

Decades before the scandal, this staircase on the river was a literal "water gate."

The actual model from the original "Star Trek" series is now on display at the National Air and Space Museum.

There’s a hidden military meme engraved on the World War II Memorial.

The exorbitant price of paradise.

Fine dining 20 feet below the surface in the Indian Ocean.

An oddities shop that dabbles in the deathly and beautiful.