This Dresden church was purposely rebuilt Protestant after being demolished in World War II.

A restaurant and observation deck built in a unique broadcasting antenna.

The prototype for all Nazi concentration camps.

Daily jousts and dancing barrel makers in Munich's mechanical clock.

The bunker where Hitler took his own life is hidden under this deliberately ordinary parking lot.

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

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

The fairy tale castle of the "fairy-tale king."

The world's longest known cave system.

Nuclear reactor created the plutonium used on Nagasaki.

The highest point in Washington state is a volcano covered in glaciers.

The only road through the heart of Glacier National Park.

The only royal palace on U.S. soil has been a territorial capitol, a military headquarters, and a prison for a queen.

This black shoreline is made up of exploded lava particles.

This awkward aquarium sculpture is one of the strangest statues in Chicago.

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

This Yellowstone geyser may not shoot as high as the nearby Old Faithful, but it erupts for considerably longer.

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.

The first declared National Monument in the United States.

The most powerful laboratory radiation source in the world pulses with 1,000 times the electricity of a lightning bolt.

This museum started as a collection of Manhattan Projects and continues to add exhibits as they are declassified.

A unique geological area spiked with wind-carved rocks that resemble teepees.

The official atomic museum of the United States explores the explosive and productive history of a much maligned energy source.