The highest point in Arizona is an oddly snow-topped peak within the otherwise arid state.

This Arizona observatory is famous for investigations into Martian life, and as the place humans first spotted Pluto.

An urban laboratory.

Once a year, at exactly 11:11 a.m., this monument comes to life.

This rustic cabin, outfitted with gun slits, was once home to John D. Tewksbury, patriarch of the bloodiest family feud in American history.

In this small Phoenix taxidermy emporium, you can find everything from a squid in a jar to a freeze-dried toad.

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

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

This striking public art installation is suspended above a public park, designed to gently move in the breeze.

This quirky UFO-shaped curiosity is often mistaken for the airport’s control tower.

A forgotten Cold War relic hidden in the outskirts of a Wisconsin city.

What appears to be a wizard's lair in Milwaukee actually houses a massive water pipe.

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.

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

A unique botanical garden housed in three giant geodesic domes.

A giant, Gilded Age mansion that once belonged to the beer baron of Milwaukee.

This quirky museum has a collection of more than 15,000 bobblehead dolls.

Six tiny houses built for working class people form the largest intentional cluster of Wright homes anywhere.

The oldest certified bowling alley in the United States is in the basement of this century-old bar.

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

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