When ecosystems collide in the arid Southwest.

Gleaming self-built castle towers made from beer cans and inspired by "Vitamin Mary Jane."

This alley in downtown Chicago held the bodies of over 600 people after the fateful Iroquois Theatre fire.

A tour de force of a fountain, memorializing a man who loved fountains more than anything else.

The hike through a narrow river flanked by the 2,000-foot-tall walls of Zion Canyon is one of the best in the world.

In this truly magical place, rent hasn't been raised since the year 1520.

Among the ostentatious rococo ornamentation of this church, an image of death cuts the life-thread.

The young Black revolutionary was killed before getting to see a non-segregated pool in his hometown.

It was originally part of a "terrible lizards" collection at the 1964 New York World’s Fair.

Julia Buccola Petta's body was peculiarly well-preserved when it was exhumed six years after her death.

The final resting place of two (or three) presidents, one vampire, and 18,000 Confederate soldiers.

One part antique store, one part curiosities hodge-podge.

Home to the largest urban bat colony in North America, estimated at 1.5 million bats.

The world's first and only three-segment bascule bridge folds up into the shape of a capital "N" to let boat traffic through.

There are eight natural springs around town, each with a slightly different taste.

Chicago’s incendiary role in the labor movement.

Illegal drag racing two stories beneath Chicago’s streets.

The hometown of Popeye's creator is littered with a growing collection of granite cartoon characters.

An abandoned factory along the Mississippi coated by a giant mural.

A kitschy, creepy St. Louis mainstay.

A former waterfront market is now in the center of town due to some interesting Boston engineering.

These chunky stone towers out in Lake Michigan are the key to Chicago’s drinking water.

A century-old hotspot for jazz, frequented by everyone from Charlie Chaplin to Al Capone.

Thanks to a quirk of elevation this gift shop produces magic doughnuts that are found nowhere else on Earth.