The Siege of Naarden ended in 1814, but the cannonballs embedded in the town church remain.

This century-old street sign is a forgotten remnant of the old city.

The mirrored section takes the shape of Hebrew characters when viewed from above.

One of the Leiden's oldest pubs is also the birthplace of the Heineken star.

In the Netherlands, one of the world's largest private car collections can be found.

Home to the world's oldest functioning orrery.

A bizarre form of natural mummification was discovered in the church of this Frisian village.

Where royalty waits in the height of luxury.

Debatably clever, or just plain honest hotel advertised as "The Worst Hotel in the World."

Go inside a revolutionary, cage-less zoo where 35 species live and some of them roam free alongside their human visitors.

Incredible labyrinth of man made caves.

Some 80,000 Delft Blue tiles line the inside of this Amsterdam walkway.

Crouch down, stretch tall, and be sure to flail your legs to pay homage to the Monty Python classic.

Amsterdam's narrowest house facade is a monument to 17th-century tax evasion.

The ruins of this Dutch castle sit atop a labyrinth of once-secret tunnels and passageways, dating back over 900 years.

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

Oldest Museum of the Netherlands is a true cabinet of curiosities.

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

A unique collection of gilded age mechanical pianos.

An overgrown and largely forgotten cemetery lies hidden within the outskirts of Amsterdam.

Ancient catacombs form the foundation for this Rococo orgy of a church.

The stunning interior of this Gothic church is covered in ornate gold details.

A miniature city, once ruled by the Queen of the Netherlands.

Remains of Roman amphitheater hidden in a sleepy quarter of Paris.