This Mediterranean castle was built for a millionaire and his giant dog.

You have to love a museum with a truly dedicated focus. A focus on Superman, for example.

Known as the "Cross At The Crossroads," this massive metal cross is just short enough to avoid the FAA.

The largest cemetery in Louisville is the final resting place of Col. Sanders and Muhammad Ali.

A ceramic-tiled room at the Seelbach Hotel said to have secret tunnels used by Al Capone and a crowd that helped inspire F. Scott Fitzgerald's 'The Great Gatsby.'

This abandoned cemetery has a dark past of bodies buried over bodies.

At a mile long, the Fort Madison Bridge is the largest double-decker swing-span bridge in the world.

One of two identical monuments marking the sites of military training encampments in Peoria, Illinois.

This graveyard is home to the so-called "Witch's Circle."

Tiny treasures, giant murals, and strange sculptures decorate the windows and doors of this abandoned building.

Quirky water tower advertises the long-gone Brooks Tomato Products Co.

World's first "penitentiary," meant to be humane, drove men insane.

Oversized statues are just the tip of this nostalgic Americana roadside attraction.

Chicago's Navy Pier on Lake Michigan was a training hub for aircraft carrier pilots during WWII.

400 million-year old limestone caverns nestled in the Ozarks served as shelter and a hideout for cultures throughout North American history.

The Old Courthouse takes visitors on a captivating trip through St. Louis' timeline.

Less a museum than a bizarre fantasy world created by artists and engineers.

A commemoration of over 150 of St. Louis's favorite sons and daughters.

Speak to a companion on the other side of the room loud and clear through this architectural anomaly.

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

See massive fossils that are over 200 million years old in northeastern Arizona.

L. Frank Baum wrote part of the "Wizard of Oz" series in this wooden Victorian beach resort.

Inspiration struck on this seat outside the Griffith Park merry-go-round.

Inscribed on the gate are the names of 29 figures from the University's first five centuries.