One of the world’s largest suspended aquariums, located in Dubai Mall.

On any given day this sprawling market houses literally tons of government-regulated gold, gems, and precious metals.

This indoor ski resort has a mountain contained inside a mall.

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

Copenhagen's celebrated theme park and gardens.

A Trabant car, a kangaroo statue, and a plethora of plants take over this abandoned-factory-turned-bar.

Estonia's largest creative city is a vibrant bohemian hub located within a former industrial complex.

An empty relic of the Moscow Olympics crumbles away in Estonia's capital.

A controversial “crumpet”-shaped museum tries its best to blend in with surrounding parkland.

One of the two original gateways into the Kasbah, this gateway is a nesting site for storks.

This vast masterpiece of Moroccan architecture spreads across 20 acres.

Sitting in the basement of a castle, the largest wine barrel in the world is bigger than most apartments.

This island castle now hosts a world-famous opera festival.

If you visit Santa's village, you can get your passport stamped to show you crossed into the Arctic Circle.

Finland's northernmost zoo is home to the country's only polar bears.

These historical landmarks stand as reminders of the evolution of animal care and conservation.

A small island dotted with old, historic Finnish buildings.

A subterranean house of worship carved right out of the bedrock.

A mammoth WWII anti-air defense tower has been repurposed as a hotel with a rooftop garden.

Along the banks of the River Rhine lies a park that seems unassuming, but beneath the surface lies a long and fascinating history.

An ancient Roman temple hidden in the basement of Römerpassage, a modern shopping mall.

While you wait to cross the street at a traffic light in Mainz, you might notice that the light is staring back at you.

An expansive complex of subterranean tunnels is all that remains of one of Europe's most formidable medieval fortresses.