The bronzed skull of a beheaded traitor was affixed to the city gate in the 17th century.

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

This cheese shop also houses a museum devoted to Dutch dairy.

This bird-loving brewery is situated in an old municipal bathhouse, nestled beside a 300-year-old windmill.

Amsterdam's former hotspot for public executions and dissections.

This city square is home to Amsterdam's oldest church and a statue honoring Dutch sex workers.

An ancient passage filled with stalls selling used books, once frequented by Vincent Van Gogh.

The attic of a four-century-old canal house hides a clandestine church.

Most prolific publishing house in the 1600s open to the public.

Three floors of musical instruments coming from all corners of the world and hundreds of years of musical history.

A little sculpture with a large wardrobe.

Drink among marionettes at this pub inside a historic puppet theater.

This 38-drawer structure claims the superlative title, but it isn't the world's only giant filing cabinet.

Stand at the center of this lakefront sundial, and you'll become part of the timepiece.

This beautiful Brooklyn monument over a crypt memorializes a grim and largely unknown story from the American Revolution.

Michael Jackson got Bad and Crocodile Dundee walked on heads in this iconic Brooklyn subway station.

The oldest Dutch colonial stone house in New York City is a hidden gem on the border of Brooklyn and Queens.

The privately owned cemetery that holds room for Washington's finest when they step down from life.

The largest permanent Monopoly board makes one of the longest games even bigger.

It is locally loved and ridiculed for literally looking like poop.

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.

An inconspicuous footbridge beloved by San Diego locals.

A sculpture of the famous photograph stands on San Diego's "Greatest Generation Walk."

San Diego's most historic and haunted home.