In Chicago, a pizza-enthusiast has opened a museum dedicated to the history of pizza.

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

Where dioramas can follow you home.

These pretty kitties killed and ate as many as 135 railway workers.

One-of-a-kind preserved ruins of an abandoned 1880s church in Chicago's Pilsen neighborhood.

This stunning gothic ruin was a casualty of the Indiana steel industry crash.

This cheerfully-named branch of the Chicago River is the fetid result of years of blood, entrails, and meatpacking waste.

These abandoned grain silos and tunnels are an urban exploration dream.

One of the few remaining relics of the meatpacking hub that made Chicago the "hog butcher to the world."

Former meatpacking facility turned vertical farm and sustainable business complex.

A 19th-century horse lover's bequest led to the construction of this unique fountain in Chicago.

An actual 1957 Cadillac De Ville, encased in 15 cubic yards of concrete.

The original Garfield station is the oldest station facility on the "L", with the station house dating from 1892.

This abstract sculpture is rumored to cast a hammer-and-sickle shadow once a year.

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

This modest post office sits on the site of H.H. Holmes' famous murder castle.

This urban drawbridge gained eternal pop culture fame when the Blues Brothers jumped it while it was raised.

One of Chicago's last seafood smokehouses perfects a dying breed of fishcraft.

First planned industrial community in the United States.

Urban explorers embraced America's now demolished first suburban mall, south of Chicago.

Tracks near this Texas nature site were once thought to support the Creationist belief that man and dino coexisted.

A starship has landed in Texas, a welcome break for weary travelers from a drab stretch of I-35.

In Paradise Cemetery resides a mysterious headstone with a strange inscription.

This crumbling UFO is one of only a few remaining "moveable ski chalets" of its kind.