A public work of art that also provides some relief from the summer heat.

A natural arch carved by a river gave its name to the so-called "Cave of Forgotten Dreams."

Fighting the British and making game shows for over 150 years.

A castle-like sea fort from the 17th century is now a museum to oyster farming.

The World Wide Web was created in this nondescript corridor at CERN.

This statue of a Hindu cosmic dancer at CERN is a metaphor for modern physics.

CERN's beautiful, bending sculpture is a tribute to the spread of knowledge.

These gigantic skeletons tower over visitors and provide insight into the creatures that once ruled over Ireland.

A guitar mounted on a wall in Temple Bar honors the Irish musician.

This medieval city gate is now a blend of the past and the modern world.

San Gennaro, the patron saint of Naples, greets pedestrians between these narrow city streets.

An eerie, little-known Neapolitan museum filled with preserved human remains.

Every day is like Christmas on this street where the traditional Neapolitan nativity scene comes to life.

This shining multicolored metro station deep under Naples is said to be the most beautiful in Europe.

Looming communist pillar with a Czech twist.

Synagogue built from the stones of Solomon's temple contains the golem of Prague.

A bust of Franz Kafka spins in pieces, reflecting the writer's inner torment.

This tipsy office building in downtown Prague was originally called “Fred and Ginger.”

A steampunk-styled three-floor factory churning out art, activism, and electronic beats.

Macabre astrological automaton clock dating to the late 1400s.

The best place in the world to buy tinned fish.

This Industrial Age architectural and engineering gem helps visitors and residents alike traverse Lisbon, “The City of Seven Hills.”

St. Mary's features one of the most spectacularly decorated cathedral interiors in all of Europe.

Four giant movable street lights decorate this modern Rotterdam square.