The headquarters of one of the world’s longest-running humor magazines bears a noticeable resemblance to a head wearing a Prussian helmet.

Now abandoned, the first public health hospital in the U.S. saw more than one million immigrants from around the world.

A propulsion engine testbed that paved the way for the Space Shuttle launch sits without recognition at this rocket center.

This kitschy tavern is also home to rare early editions of "Treasure Island."

Frank Lloyd Wright built this suburban synagogue late in life, but it stands among his most iconic masterpieces.

Conflicting markers on its floor tell a tale of two city centers in San Antonio.

Amazingly detailed marble cinerary urns that once held the cremains of Roman elite.

Religious statues built because of one man's bargain with God fill this peaceful sculpture garden.

Hidden within a Gulf Coast port city is a wonderfully eclectic museum whose beginnings were housed in a bank window.

Open since 1938, this diner has kept its fountain, malt machine, and all the gum that greasers left beneath its counter.

The first permanent memorial to a unique secret weapon of World War II.

A secret fresh water spring for animals and humans alike hidden along the most famous road in the United States.

Once defending the city of New Orleans from invasion by sea, this fort faces an uncertain future.

The mysterious 855-foot zigzagging stone wall has been baffling people for centuries.

Before becoming a public park, this spot was a shell midden, a fort, and an amusement park.

This collection of neon icons is preserving Arizona's history, one sign at a time.

This spot in St. Louis, marked with a simple sign, has seen more pro baseball than just about anywhere else in the world.

One of few surviving standpipe water towers in the U.S.

The first rural cemetery west of the Mississippi is home to the elaborate tombs of St. Louis' local beer barons.

What was meant to be a temporary exhibit is now a permanent fixture at the St. Louis Zoo filled with beautiful birds.

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

A Tucson museum and performance space full of found-object movable sculptures.

An abandoned facility that has become a place of ritualistic satanic worship, or so rumor has it.

Paths are maintained, but trees have taken over plots.