A huge old mansion full of thousands of toys, each there to be used and played with.

The "stairway to heaven" lookout tower was built to resist weather, arson, and the laws of physics.

This narrow Ghent alleyway is an officially sanctioned street art tunnel.

The highest point in Belgium is a staircase to nowhere.

A giant bug impaled on a 75-foot-tall needle.

This small window display is dedicated to the noble carrot.

Museum covers every step of the chocolate-making process, from cultivation to the finished product.

A maze of crosses marks the jumbled divide between the Netherlands and Belgium.

Meet the bronze beloved pet to a family of famous peeing statues.

Ancient man-made caves underneath small town Belgium.

A little sculpture with a large wardrobe.

Sculpture designed by Turkish artist and professor Mehmet Ali Uysal.

This abandoned Belgian fortress is purposefully being left to nature.

This collection of over 50 murals celebrates Brussels' rich history as the self-proclaimed home of the "comic strip."

Hiding the longest subterranean river known in the world.

From Tintin to the Smurfs, Europe's greatest graphic icons are celebrated in a grand Art Noveau gallery.

A Belgian self-built tower inspired by the Bible and ancient civilizations.

Climb inside an iron crystal magnified 165 billion times its normal size.

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

This ghost town in Belgium will lose its street art when it ceases to exist.

Part modern art project, part traditional chapel, this see-through church is only substantial from the right angle.

An ode to the classic piece of British street furniture.

Enormous terracotta heads of Queen Elizabeth and Prince Phillip can be seen on the side of the road to Windsor.

The geoglyph once sported a glass bottle eye.