This massive stained-glass masterpiece is thought to be the largest Tiffany dome in existence.

A speakeasy takes on Chicago's drinking culture.

This shop for all your super spy needs hides an educational secret.

Four glass boxes hover over 1,000 feet in the air to give visitors an unparalleled view of Chicago.

A monument to the art of slicing people open.

The Kalamazoo factory has 100 years of instrument-making, and one big wartime secret.

This fairytale castle was built as a show of power but was nearly torn down thanks to its history of torture.

Each time a baby is born in Ghent, these streetlights flash in silent celebration.

A museum celebrating the Canadian forces that liberated Belgium from the Nazis replete with battlefield miniatures and multiple Gardens.

A beer pipeline runs beneath Bruges.

To enter this cluttered-yet-cozy sanctum of Belgian brews, ring the bell and tell the gatekeepers you've come “to taste beer.”

This collection of 20th-century toys is filled with a lifelong personal toy collection brought from the U.S. to Amsterdam.

A poignant museum dedicated to the history of the Dutch resistance against Nazi occupation

The world's first zoo for microbes collecting the horrible and wonderful things living on and around us.

The world's only museum devoted to the wonders of fluorescence.