The 2,000-year-old Roman columns are hidden within Barcelona's Gothic Quarter.

This former Baroque palace on the historic Calle Montcada is a rare architectural gem and was once the meeting place of an aristocratic scholarly society.

This fountain was designed to honor the man who helped bring water to Barcelona.

Catalonia Tradition: Beating the hollow Christmas log until it defecates in your fireplace.

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

The sunken structure looks like the victim of a catastrophic flood.

This small island, a byproduct of 19th-century canal construction, is now home to a charming Japanese garden.

A poem by Arthur Rimbaud is inscribed on the wall of a street that, while it is only one block long, plays a key role in multiple novels.

A museum dedicated to one of Paris’s most famous residents, tucked into a corner of one of the city’s most famous squares.

Thousands of tourists and residents in Cologne affix "love padlocks" on the Hohenzollernbrücke Bridge to symbolize their affections.

If you look closely at the oldest bridge in Paris, you might notice hundreds of ugly faces leering from its sides.

One of the oldest and largest wooden churches in France was very evidently constructed by shipbuilders.

This German museum is devoted to all aspects of grave culture from headstones to coffins.

A memorial in the Tiergarten is a reminder of the suffering inflicted on homosexuals by the Nazi regime.

At one of Berlin’s oldest churches, visitors can place mosaic tiles to help restore a medieval mural.

One of downtown Berlin's last reminders of its Communist past.

Berlin's natural history museum houses the world's largest mounted dinosaur and the late beloved polar bear Knut.

A narrow passage next to a cafe leads to a courtyard exploding with murals, tags, and paste-ups.

An eerie, derelict amusement park in Berlin.

A famous big wave from Japan serves as a tribute to the victims of the disastrous Elbe flood.

A moving and macabre World War I-era painting by the great artist Otto Dix.

Over 12,000 hygiene oriented objects and exhibits.

Tourists often confuse this beautifully ornate former cigarette factory for a mosque.

This Dresden church was purposely rebuilt Protestant after being demolished in World War II.