This amazing abuela became a diehard metal fan late in life and an icon of Madrid's '80s rock scene.

Madrid's romantically ornate crystal palace has been offering shelter to plants and art for over a century.

Learn about Iceland's hidden folk at this school dedicated to the study of elves.

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 fantastical waterfall is hidden in a cave located in a cracked cliff.

A giant red chair bolted to a rock on a remote mossy hillside in Iceland.

This stunning concert hall has become a symbol of Iceland's national recovery.

A sulfuric martian landscape that looks far better than it smells.

These ominous lava formations were said to be an entrance to the netherworld so of course they inspired a famous metal band.

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.

This elegant arc of a waterfall marks a religious turning point.

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

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

This Parisian fountain is a little bit fantasy and a little bit nightclub.

This statue was given to France by the United States to commemorate the centennial of the French Revolution.

This surreal statue brings a famous French novel about a supernatural cad to arresting life.

This bridge was constructed from the rubble of the infamous Bastille.

Remains of Roman amphitheater hidden in a sleepy quarter of Paris.

A favorite Paris bar for U.S. expats, including Gershwin, Hemingway, and James Bond.

Beggars were miraculously "cured" of their fake ailments when they returned home to this 17th century Paris slum each night.

A 16th-century fountain marks the site of a lost medieval cemetery once filled with mass graves.

Notorious artist squat renovated into legal studios.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.