"Stairs of the Turks", a chalky white cliff eroded conveniently into stairs, allowing for easy pillaging.

A monument to the three wars that led to German unification towers within a Berlin traffic circle.

Tiny memorials honor individual victims of the Holocaust.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

Berliners converted a bombed-out, disused lot into a community-run urban farm with its own cafe and bar.

This monumental work of art symbolizes the coming together of a previously divided city.

One of São Paulo's tight urban intersections has become a haven for graffiti artists ever since a single Batman started the trend.

This singular art museum in São Paulo is unique inside and out.

This Brazilian town built by Freemasons is full of colonial Masonic architecture and symbolic imagery.

These slanted cubic abodes are a creative if odd solution to a zoning pickle.

Birthplace of the "Cat in the Cradle" and a cluster of iconic, original windmills that let the Dutch tame the seas.

What was once a bustling mining installation is now a bustling hub of contemporary art.

This fairy tale forest hides scenes from some of the more obscure and bizarre Western nursery stories.

A Museum of Psychiatry in a still-operating mental institution.

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

A fascinating and enormous collection of natural history exhibits stained by a dark colonial legacy.

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.

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

A collection of weird and wonderful art fills a former houseplant nursery.

Somewhere there is a giant who can no longer poop, but now travelers can stay inside his anus.

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

The tallest church in Mechelen might have been the tallest in the world if not for a lack of funds.

A 14th-century fortified keep showcases the masterpieces of an ingenious 20th-century clockmaker.