A canopy trail with sweeping views and a giant tunnel slide.

Underground farm located in a former bank vault deep within the bowels of Tokyo's business district.

On the Spree bank, discover one of the last reminders of a symbolic wall that divided, and was torn down by the people.

Holy Grotto of Montserrat Monastery holds one of Europe's mysterious black Madonnas.

This imposing modern citadel started out as a home renovation project.

This semi-secret storybook hedge maze is also the oldest garden in the city.

Mountain where Jesus was first tempted by the Devil.

This cemetery features modernist statues as strange as its name.

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

Construction of Barcelona’s iconic (but controversial) church was finally completed in 2026—a century after the death of its architect.

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

The oldest giants in Catalonia are now displayed in a 14th-century Gothic church.

A hands-off space for graffiti artists to hone and display their skills.

One part local history, 99 parts gruesome haunted house.

This futuristic German television spire is actually the world's largest digital clock.

Twisted buildings adorn the banks of the Rhine river.

The "Prussian Versailles" that is as glorious today as when it was built.

Berlin's old airport.

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

An old department store turned Nazi prison turned artist commune.

Old Danish castle immortalized in Shakespeare's Hamlet.

The de facto symbol of Copenhagen is this bronze fairytale which cannot seem to keep its head for very long.

Danish tourist destination well known for open stalls where vendors sell marijuana on the street.

Nordic giants resurrected from the sea and restored to their former greatness.