A unique attraction and museum dedicated to exploring iconic roadside structures.

This historic railroad hotel built from Kansas limestone was once the most popular hotels for traveling salesmen in the midwest.

This bleach-white graveyard overlooking the ocean is accessed through a tunnel.

Legend tells how a Spanish soldier disappeared from this isolated sentry box without a trace.

Puerto Rico's once thriving oil company is now an abandoned wonderland of rusty steel.

The abandoned remains of this once-thriving hotel looms over the city, awaiting an uncertain future.

These red and black houses were awarded to the firefighters who saved their city from an enormous blaze.

On a clear day, you can see all the way to the Virgin Islands from the top of this observation tower built in the 1960s.

A magnificent waterfall nestled in the heart of the El Yunque National Forest.

Hundreds of lucky felines haunt the ruins where Caesar was murdered.

The remains of this 2nd-century Roman temple are incorporated into a modern building.

The spot where the fascist dictator made some of his most famous speeches including declaring war on Britain and France.

A massive marble foot is tucked away in a small alley near the Pantheon.

Plaques on its facade commemorate the Tiber's most destructive deluges.

A detailed pachyderm supports Rome's smallest Egyptian obelisk.

A semi-scholarly approach to sex.

A Manhattan courthouse hides a small but scathing memorial to Holocaust injustice.

A terrific purveyor of natural history objects and curios.

An homage to Jackie Gleason's bus-driving character from 'The Honeymooners.'

There must be a pun in this haystack somewhere...

Cheap pizza and all of your naughty bedroom needs housed in a stunning example of Art Nouveau architecture.

A bit of retro transportation flair preserved in the world's largest department store.

A three-story copper skybridge connects two Manhattan buildings with Art Deco luxury.