Visitors are treated to a stained glass kaleidoscope interior inside this work of art.

The traveling wares of Denmark's most famous author.

Once a granite mine, this beautiful lake is the perfect place to cliff jump and zipline in Denmark

Northern Europe’s largest castle ruins sit precariously on an island cliffside.

Positioned outside a church, this sinister folkloric figure incited protests in both 1902 and 2002.

Even though bison are not native to this Danish island, you might find them walking around the Almindingen Forestas as part of a nature experiment.

The world's largest wooden structure.

One of Madrid's oldest trees, with a long and colorful history, resides in El Retiro Park.

Commonly acknowledged as the only public monument to the Devil himself.

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

This sculpture pays homage to the street sweepers of Madrid since its inauguration in 2001 in Plaza Jacinto Benavente.

Dedicated to a young woman who broke gender barriers at the University of Madrid.

An ancient Egyptian temple in the middle of Madrid, Spain.

A favorite with sightseers and locals alike, this Norwegian funicular provides easy access to a stunning view of Bergen and its environs.

This Swedish astronomical clock was in storage for almost a century before its glorious workings were put on display once more.

This pair of gilded girls atop an Art Deco building in Copenhagen were built to function as a weather indicator.

This bridge's unique architecture honors nautical heritage and encourages self-awareness.

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.

This eye-popping Icelandic crater lake is surrounded by red volcanic rock.

Iceland's tribute to its thankless civil servants.

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

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

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