The castle used by the Danish Royal Family as a hunting retreat.

Despite monuments in other locations, this spot in a South Dakota field is recognized by the U.S. National Geodetic Survey as the center of the 50 states.

The tallest mud-brick structure in the world has been standing since the 1500s.

These mysterious petroglyphs in Vermont reflect a troubled history in the treatment of Native American culture.

These strange piles of magnetized volcanic ash travel across the desert about 50 feet per year.

George Washington, Alexander Hamilton, and Benjamin Franklin all slept at this humble inn.

An ancient Phoenician citadel once stood at the site where Queen Dido first landed, according to legend.

The northernmost point of continental Africa—or is it?

A private home museum with a collection of over 5,000 Peranakan artifacts.

Amid the rubble of Aleppo's Old Quarter, part of a historic market has been restored and re-opened.

A beautiful modern church dedicated to the teleporting patron saint of Andorra.

An awesome blend of traditional architecture and street art.

This giant bronze image of Christopher Columbus embarked on a voyage of its own.

Two of the most notable names in automobile history are commemorated at the place where they're said to have first met.

The gnarled remains of an exploded German bunker from World War II sit along a breathtaking fjord.

Spectacular volcanic cliffs along the Crooked River invite hiking, rock climbing, and photography.

Nature's water park in the Wadi Bani Awf valley is full of pools flanked with cliffs and natural water slides.

Also known as the Great Mosque of Damascus, this is one of the world's largest and oldest mosques.

The childhood home of the Wright Brothers in Dayton.

One of the most breathtaking railways in Europe also takes one of the steepest climbs, from fjord to mountain plateau.

This incredible narrow-gauge mountain railway was created by a ceramic artist.

This institution honors Nepal’s most storied warriors.

Young Emmett Till's tragic story, which sparked America's civil rights movement, is retold near the site where it occurred.

A breathtaking flower tunnel bursts with beautiful golden blossoms.