A six-story-tall golden pyramid, surrounded by a moat.

This cave holds a surprisingly colorful variety of geological oddities.

One of the largest aviation events in the world brings half a million aircraft enthusiasts to Wisconsin each year.

A bizarre house filled with an astounding array of collections.

At Chicago's revered Field Museum, visitors are invited to learn about and literally explore DNA.

Each of these gorgeous, intricately decorated rooms is painstakingly crafted to the scale of 1 inch: 1 foot.

A lush green oasis in the middle of Chicago.

This morbid, delightful curiosity shop offers everything from animal bones to human teeth.

At the largest railway museum in the United States, you can see everything from an early steam engine to a functioning Thomas the Tank Engine.

The Bong-area park police have asked visitors to please, stop stealing the signs.

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

The spaceship-like theater, which is still in use, was one of the most popular exhibits at the 1964 New York World's Fair.

A wonderfully curated used bookstore in an airport.

Statue dedicated to the star of an old television show.

The bugs crawling down the front of this office building are almost as big as a '68 VW Beetle.

A unique botanical garden housed in three giant geodesic domes.

This striking art museum holds an amazing series of curiosity cabinets.

An off-the-beaten-path place to literally hang beneath Milwaukee's Holton Street Bridge.

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

Robots, lasers, and whoopee cushions, oh my!

The palatial McDonald's that inspired Wesley Willis.

The beloved home to all publications indie, erotic, and punky.

Four glass boxes hover over 1,000 feet in the air to give visitors an unparalleled view of Chicago.