A place to eat for on-the-run agents and espionage enthusiasts.

Wisconsin's most celebrated export gets the royal treatment on I-94.

This cave holds a surprisingly colorful variety of geological oddities.

River pirates, murderous bandits, and serial killers used this Illinois cave as their debauched hideout.

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

In the loving memory of a tragically deceased role-player this Illinois park is decked out with both dungeons and dragons.

In the Shawnee National Forest, amazing rock formations peer through the treeline.

Chicago's museum dedicated to the history of bondage and fetishism is more textbook than titillation.

This landmark of the Chicago silent film industry may not be in the picture business anymore but it still stands proudly.

Chicago was once a major hub of film production, but being silent film you don’t hear much about it.

Chicago's North Park Village was once the largest municipal sanatorium in the country.

More than 5,000 contemporary and "historic" mustards from around the world.

What's left of the ruins of the 1893 Columbian Exhibition, or World's Fair, also known as the White City.

Robots, lasers, and whoopee cushions, oh my!

All of Chicago's wood-paved streets are long gone but two alleys remain.

19th-century operating theatre in which the use of ether was first demonstrated - plus, a skeleton and a mummy!

The site of the first couple's first kiss is commemorated by the most adorable presidential monument ever.

Ralph Waldo Emerson spent two years living here decades before it became a Frederick Law Olmsted-designed park.

A cavernous three-story, 43,800-square-foot basement that was forgotten about for 60 years.

Moonbows over Kentucky.

An extraordinarily ornate museum in San Diego holds wondrous anthropological treasures.

The only Bahá'í house of worship in North America and one of only a handful worldwide.

Chicago's largest cemetery is full of beautiful Victorian monuments and more than a few ghost stories.

A monument in Washington D.C. marks the spot from which all other roads were supposed to stem.