One of the world's largest model railroads is a mind-boggling achievement.

A museum designed by and dedicated to P.T. Barnum in the town where he is buried.

The National Railway Museum in York is the largest railway museum in the world, attracting almost 1 million visitors per year.

The railroad tunnel nicknamed the "Bloody Pit" for taking the lives of hundreds during its construction.

On the Spree bank, discover one of the last reminders of a symbolic wall that divided, and was torn down by the people.

One man's exploration of the human form, including the bizarre and delightful "Man Attacked by Babies."

The world's oldest and largest museum of mass transit vehicles.

A valley of unique erosion patterns lends to a view like nothing on Earth.

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

A traveling postal dog covered 48 states and more than 140,000 miles, and he lives on as taxidermy, patched up with a rabbit's foot and a pig's ear.

Stockholm's decidedly unique public transit system has doubled as the world's longest art gallery for decades.

A dramatic, 360-degree recreation of Pickett's Charge in the Civil War.