Overshadowed by the theme park opposite it, this small museum explores a major moment in American history.

This haunting monument honors the victims of 9/11.

Dedicated to extinct passenger pigeons.

Defy gravity at this fascinating Pyrenees overlook platform.

Where Saint-Martin ends and Sint Maarten begins (or vice versa).

How did 19th U.S. President Rutherford B. Hayes become so beloved in Paraguay?

The first home and studio that belonged to the famous architect.

The grounds of former plantations where abolitionist Harriet Tubman spent her youth enslaved are now a museum to her incredible life.

Blending modern art with Baroque architecture, this wondrous mosaic grotto serves as the late artist's final creation.

Located within a 17th-century convent, this museum features centuries-old Christian art pieces that meld European and Asian influences.

A grueling 699-step stairway to a heavenly view of the island of Saint Helena.

This site was a school and a center of Japanese-American life before internment.

In 1810, free people of color made up more of New Orleans's population than any other Southern city.

An eerie fountain commemorating the death of a boy that sparked a small war in the 19th century.

These 7,000-year-old cave paintings depict life in Neolithic Spain.

A helicopter memorial commemorating what was once the only way to access this West Berlin exclave.

This national landmark is also home to a massive treehouse.

Marvel at this immense work of art that greets arrivals to the city.

This stone tower was built to protect Crete from incoming pirates.

A black sand beach where glacial fragments wash ashore and look like sparkling diamonds.

This statue celebrating early Hollywood is largely forgotten, while its twin replica at Walt Disney World has become an icon.

Over a millennium ago, this site on the shores of Lake Titicaca was home to a city of more than 10,000 people.

A major pre-Columbian archaeological site in central El Salvador.

This 86,000-square-foot artwork is the largest mural in the world to cover a dam.