A moody and picturesque riverside ruin overgrown with vegetation.

Go surfing on this urban wave, "hacked" by local surfers.

Daily jousts and dancing barrel makers in Munich's mechanical clock.

A series of abstract, silly sculptures represent the works of a great modern classical composer.

The tradition of open-air secondhand and antiquarian bookselling in Paris dates back to the Renaissance.

The water-powered carriages are long gone, but for over a century this funicular railway has been the fastest route to the highest point in Paris.

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

A breathtaking viewing platform over the Alps.

The world's oldest known salt mine.

Trick water gardens from 1619 featuring a 200 piece mechanical theater powered by water.

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

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 natural Icelandic fissure allows divers to swim right between two volatile tectonic plates.

A winding, blood-red tunnel of hardened lava navigable by foot.

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

Climb to the top of its spiral spire for spectacular views of Copenhagen.

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

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

This massive piece of artwork weighs more than 250 tons, and was designed as a tribute to the first president of the United Arab Emirates.

This futuristic building is yet another architectural wonder in Dubai.

No building in the world leans as far as the so-called “Leaning Tower of Abu Dhabi.”

This living legend of maritime history is enjoying a second life.

These otherworldly formations were shaped over millions of years by the forces of nature.

One of the largest sand dunes in the world is nicknamed the "Scary Mountain" due to its steep slope and sharp incline.