The hallucinogenic center of the ancient world.

Monasteries on rock pillars, once accessible only by frayed ropes.

Portugal’s highest lighthouse has one of the most impressive focal planes in the world.

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

Swedish skyscraper with a 90° twist.

This chimerical bridge/tunnel appears to dead end right into the sea.

The picturesque birthplace of Icelandic democracy is drenched in the blood of its brutal past.

The largest whale museum in Europe allows visitors to walk among life-size giants.

This hobbit-y little hot spring may be the oldest spring used by humans in all of Iceland.

If a glacial river suddenly diving into a sheer chasm via a dramatic, multi-stage waterfall isn't peak Iceland, it's certainly close.

This valley of hot springs and boiling mud pots is home to the record-holding "Geysir," which originated the English word.

The most powerful waterfall in all of Europe.

Iceland's largest lagoon is home to stunning multi-colored icebergs.

One of the tallest buildings in Iceland, and perhaps, the most visually impressive.

The unique waterfall in Iceland's south features a backdrop of geometric black lava columns.

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

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

This centuries-old gothic monster has been converted into a sprawling, glossy bookstore.

This small town in the Netherlands has no roads but instead, miles of canals and over 100 bridges.

This luxury shopping lane has been protected by its own tiny police force for over a century.

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

This whimsical statue dumps water on its head to symbolize knowledge flowing into his brain. Or maybe booze.

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

Theme park featuring miniature replicas of European monuments.