An abandoned early-20th-century boomtown sits within the Calico Rock city limits.

With 8,000 pipes this giant instrument is the most versatile theatre pipe organ ever built.

Cemetery featuring rare glass-fronted columbarium.

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

The oldest house in Chicago certainly doesn't look the part and there are some who say it doesn't deserve its title either.

Where a brain, a beauty, a jock, a rebel, and a recluse met one Saturday and changed their lives forever.

A river with some unusual, and occasionally dangerous, habits.

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 once-booming Mississippi River town with a history of racial violence is now eerie and mostly abandoned.

Ancient petroglyphs discovered only after a massive fire swept across Michigan in the 1880s.

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

The largest earthwork effigy in the world.

A spectacular remnant of an Adler and Sullivan masterpiece that was destroyed in 1972.

One of the deadliest American air disasters is nearly forgotten in Brooklyn.

The Home and murder site of the witch of Rehmeyers Hollow.

A toxic ghost town sitting atop a massive coal fire.

The site of the one of the most deadly train wrecks in American history.

You could be standing at the site of one of D.C.'s most fatal tragedies and not even know it.

A spooky defunct railroad tunnel now part of a sprawling trail.

This small piece of Michigan is entirely surrounded by Ohio.

This restaurant proudly displays bread signed by the 39th president.

This museum sits on the site of a decommissioned military communications base.

The resting place of a Civil War celebrity's amputated limb.

The site where Poe "in great distress, and ... in need of immediate assistance" likely died.