The spaceship-like theater, which is still in use, was one of the most popular exhibits at the 1964 New York World's Fair.

One of the oldest and tallest lighthouses still in service on Lake Michigan.

A sculpture made from recycled materials and hand-blown glass dedicated to transportation and transformation.

The location where the American Revolution ended.

Mass grave of 50 unidentified French Soldiers who died at the Siege of Yorktown, 1781, that gave victory to the American Revolution.

Modern technology and live displays tell the story of the Pacific during WWII for the Internet generation.

An entire town preserved as a historic landmark.

For thousands of years, Native American hunters drove buffalo straight off this cliff in Montana's Yellowstone Country.

See the computer’s history revealed over the course of 20,000 years.

His discovery kicked off the Gold Rush. One of the hands on this commemorative statue points to the spot where he found the precious metal.

The Empire Mine is "one of the oldest, largest, deepest, longest and richest gold mines in California."

Pillars made of 700 pieces of luggage climb to the ceiling of Sacramento Airport's baggage claim.

Enormous pendulum helps keep Taiwan's tallest building from swaying.

One of only a handful of seaside temples in Korea, this sacred space is home to a legendary healing Buddha statue and a traffic safety prayer pagoda.

Over 80,000 carved wood blocks make up one of the world's oldest intact Buddhist canons.

Some of the freshest vegetables in Seoul are grown in a subway station.

A unique structure located on the grounds of one of five grand palaces that were built by the Joseon dynasty.

Only a few pieces remain of a grand 16th-century water clock that once announced the changing hours with the sound of bells, gongs, and drums.

The world's longest bridge fountain has hundreds of nozzles that create a beautiful, illuminated spectacle.

Celebrating the history of Hangul, the Korean writing system invented by King Sejong to improve his realm’s literacy.

Home to more than 13,000 pieces of war memorabilia and military equipment.

The last bastion of Roman presence north of the Alps looms over a German town.

This former Nazi castle was built as a school to train what would have been the future of the Third Reich.

One of the largest squares in Europe contains an entire artificial island.