This platform is now a memorial dedicated to those who were deported during the Holocaust.

Beneath the impressive baroque cathedral that rises from the center of Berlin lies the largest collection of Prussian royals in the world.

The largest free-standing aquarium in the world resides in a hotel lobby in Berlin.

This monumental work of art symbolizes the coming together of a previously divided city.

Along this stretch of beach in Denmark resides several massive bastions of energy.

A public display of random paleontology.

This Australian beach is composed of tiny shells.

For patriotic Russians, this memorial honoring the Soviet soldiers who died liberating Berlin in 1945 is the most sacred location outside of Russia.

An imperial church bombed to ruins during WWII now stands as a jagged memorial.

An old tram depot transformed into a vintage car paradise.

An elegant chandelier hangs over this ancient sewer chamber, now open for concerts and public tours.

The pretty iron lamp is a reminder of the architecture underneath London's streets.

It's gunky, it's gross, and it's been freed from the sewer and put on display.

The burial ground of four Buganda monarchs was nearly destroyed by a devastating fire.

The largest prehistoric ruins south of the Sahara, once a powerful center of international trade.

Generations have refused to move this doll from its dusty resting place to preserve a castle from a watery fate.

A 12th-century fortress containing some of Berlin's oldest buildings.

Three columns of volcanic rock shoot out of the ocean.

Icelandic folklore says this giant boulder was ripped from the mountains and placed at its current location, where it became home to elves.

Along this wire fence, travelers have been leaving a particular memento since 2012.

Medicinal spa created with the discharge from a geothermal energy plant.

Iceland's "Smoky Valley" is a beautiful river that is shrouded in a constant cover of steam clouds.

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

If a glacial river suddenly diving into a sheer chasm via a dramatic, multi-stage waterfall isn't peak Iceland, it's certainly close.