This towering church is home to a world-famous organ and a treasure trove of medieval art.

Where royalty waits in the height of luxury.

A hidden church in a hidden courtyard tells the story of the Miracle of Amsterdam.

Europe's official "zero-level," the equator of elevation.

Amsterdam's former hotspot for public executions and dissections.

Three connected pink triangles memorialize persecuted gays and lesbians throughout history.

Established in 1638 to battle the Black Death, Hortus Botanicus Amsterdam is a treasure trove of rare flora.

Museum preserving torture methods from the past.

Lombardy poplars planted to imitate the size and shape of the Cathedral of Notre-Dame de Reims.

A radio telescope for listening to the stars, based in one of the cloudiest countries in the world.

Its town washed away centuries ago, this lonely tower by the sea tells the tale of a mermaid and a curse.

A small but immensely extravagant palace built by the "Night King."

Every hour the doors open to reenact the legend of the heroic mayor who saved his town by drinking a gallon of wine.

What appears to be an ordinary bridge is actually a rare aqueduct.

In this truly magical place, rent hasn't been raised since the year 1520.

This chimerical bridge/tunnel appears to dead end right into the sea.

One of the oldest Mexican restaurants in the United States air-dries its trademark beef in a dangling outdoor cage.

An ivy-covered arch bridge dedicated to Tejano music singer and legend Rosita Fernandez.

Giant, natural amphitheaters made of delicate geological formations called "hoodoos."

The hike through a narrow river flanked by the 2,000-foot-tall walls of Zion Canyon is one of the best in the world.

An old saloon in the West filled with history, and according to some, a few dozen ghosts.

A wild west cemetery in Tombstone, Arizona, provides a window into the Old West.

The world's largest military aircraft cemetery.

A museum dedicated to the alleged Roswell Incident.