Places Sauerbratan Wants to Go

Vortex-shaped aquarium hosts Europe's largest school of piranhas and other ocean creatures.

An ultra-modern diversity park in Denmark has turned an entire city block electric pink.

A 19th-century subterranean reservoir repurposed as a contemporary art cave.

Copenhagen's celebrated theme park and gardens.

Walk through Czech history in Prague's largest graveyard.

The remains of a sunken military ship wreck visible through clear water.

This truly palatial work of Communist-era architecture now sits crumbling on a Croatian beach.

A chain of 16 wondrous lakes formed as a result of the gradual dissolution of soluble layers of bedrock.

There's a mini version of Iguazu Falls hidden in the Balkans, and it's got a rope swing.

Bridge that died in war and was resurected.

Each spring, a dreamlike carpet of bluebells overtakes the forest floor.

A rooftop restaurant hides in plain sight atop Vienna's Palace of Justice.

Visitors dip into a variety of pools of what was once ice.

Each year melting snow turns these Austrian hiking trails into scuba zones.

The beautiful baroque library of the Hapsburg empire.

Singapore's landscaping project is home to 18 incredible Supertrees.

The largest pool at its elevation sits on top of one of the most expensive resorts in the world.

A part of the world's largest marsh seems to be growing bright red Martian grass.

An otherworldly restaurant perched on the edge of a jagged cliff next to a medieval holy city.

An extraordinary mix of Phoenician, Roman, early Christian, and Byzantine ruins beautifully set overlooking the Mediterranean.

The very first subway station in New York City is beautiful, decked out in chandeliers, and ... abandoned?

This natural "sea of stones" was once used by the Romans as a quarry.

The only remaining U-boat that is still floating never actually saw any action in World War II.

A top-secret bunker now turned museum, is an eerie look at what life would have looked like in the event of nuclear war.