This $3 million model train takes you through Chicago, Seattle, and the thousands of miles in between.

A chilling disappearance (and rescue) of a child uncovers a geological mystery.

The first artificial white water river course in North America cuts right through an Indiana city.

"The Most Boring Road in the State."

The graveyard holding the remains of George Washington's slaves was forgotten for nearly 200 years.

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

The unluckiest U-boat in the entire German fleet is now on display in a Chicago museum.

A display of magnificent stained glass windows is the first exhibit of its kind.

Museum celebrating the ocean, with the largest wunderkammer dedicated to sea exploration.

The oldest building in the District of Columbia was preserved because of a mistaken connection to George Washington.

Giant, natural amphitheaters made of delicate geological formations called "hoodoos."

The second oldest continuously operating bar in Louisiana.

This cemetery has graves dating back to the 17th century, including the city's oldest carved tombstone and an ominous cryptogram.

The world's longest known cave system.

Whisper secrets in a busy station only to be heard on the other side of this acoustic arch.

The oldest cemetery in New Orleans, resting peacefully for over 200 years now.

The ancient dwellings of the Puebloans, located in the cliffs of majestic mesas.

The site of the climactic scene from the classic horror film is now a historic landmark.

The final resting place of New Orleans' most famous voodoo priestess.

Elevated freight railway turned wildly successful urban park.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

The only structure left with direct ties to the Salem witchcraft trials of 1692.

An enormous, inside-out glass globe built in 1935.

This expansive bridge in the Canadian wilderness was originally just built for friends.