While many places make the claim, the Library of Congress says this restaurant is the birthplace of the hamburger.

This quirky curiosity shop takes its cues from the world's bazaars.

Where serial killer Aileen Wuornos drank her last beer.

A fairytale art house in the middle of Wisconsin.

Outside Hope College in Holland, Michigan, a marker honors a University without people from the fictional Kcymaerxthaereal times.

Beside some power panels, a plaque celebrates the history of an alternate world.

Down a stairway in the East Village, you could once read a plaque describing an alternate history of a fictional version of Manhattan.

One of the first historical sites of an alternative universe was installed in the town of Paris, Illinois—which is now home to an annual spelling bee of Kcymaerxthaereal words.

This railroad overpass is said to be home to a murderous goat-man whose very legend has led to very real deaths.

The only freestanding table rock formation east of the Mississippi.

An abandoned vacation home spent a decade taking on legends. It's now taking on water.

This home is decked out like a psychedelic explosion of colors and bowling balls.

A self-explanatory attraction allows fans to respectfully remember and honor a comedy legend.

The famous boat that once ferried Bogart and Hepburn still floats in Key Largo after being abandoned for years.

When this test site was abandoned, they didn't even bother to take the rocket with them.

A community of collapsing homes more than a mile out from the Florida coast.

With nickel-steel armor and three-inch thick bullet resistant windows, FDR's train was a rolling fortress.

A mysterious castle built as a monument to lost love.

These remote Florida islands have a history of sea turtles and sunken treasures, and one of the world's largest coastal brick fortresses.

Possibly the most beautiful carillon in the world, set atop Iron Mountain in Florida.

A striking 12th-century-style castle built on the edge of a cliff.

A 6th-century stone lies at the site of the mythical battle waged between King Arthur and his nemesis Mordred.

A display of magnificent stained glass windows is the first exhibit of its kind.

Thousands of tourists and residents in Cologne affix "love padlocks" on the Hohenzollernbrücke Bridge to symbolize their affections.