The 1936 Summer Olympics site is a crumbling remnant of sportsmanship and a history its host country would like to forget.

A restaurant and observation deck built in a unique broadcasting antenna.

This World War II bunker now survives as a documentation of the Nazi regime and war crimes.

From Iggy Pop to David Bowie to Nick Cave, this regal music studio has served some of the all time greats.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

The bunker where Hitler took his own life is hidden under this deliberately ordinary parking lot.

Cold war icon and onetime "hole" in the iron curtain.

The site of the famous Nazi book burning campaign of 1933 remembers its "Night of Shame".

The most visited, and possibly most controversial, museum in Germany.

A narrow passage next to a cafe leads to a courtyard exploding with murals, tags, and paste-ups.

A whimsical and twisted animatronic monster tour beneath the streets of Berlin.

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

One of downtown Berlin's last reminders of its Communist past.

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

A small island hides in plain sight on Austin's Lady Bird Lake.

To honor a beloved Austin radio DJ a neighborhood bridge has been covered in a loving mosaic.

The upstairs reading room is packed with millions of rare books, literary manuscripts, and historical treasures.

Locals dubbed it the "Owl Building" because of its bird-like appearance.

A tribute to the "toughest woman on the Texas frontier," who survived a famous battle and five husbands.

A beautiful final resting place for some of the noteworthy deceased.

From a neon Rapunzel to a bike traffic meter to a street fair color scheme, the most opened drawbridge in the US is a veritable art gallery.

A giant Troll lurks under one of Seattle's oldest bridges.

A walk through the historic city center, under the streets of Seattle.

A wall of chewing gum moonlights as collective art.