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

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

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

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

Bridge that died in war and was resurected.

A field filled with carved medieval tombstones called stećak.

A spherical "micro-nation" in the heart of Vienna.

Op-art architecture designed for happiness.

Giant WWII fortresses that fired 8,000 rounds a minute, now home to thousands of pigeons.

Legends surround an ancient tree trunk riddled with nails for good luck.

Vienna's giant wonder wheel had a starring role in one of the greatest noir movies of all time.

A turn of the century building boasting some of the most beautiful art nouveau architecture in Prague.

A stunning Victorian abbey and walled garden on a lakefront.

Traveling this mountain pass reveals quaint stone buildings, stunning Irish scenery, and a bridge said to grant wishes.

Follow the original medieval paths that wind through this intriguing section of the city.

The ruins of this medieval castle in Northern Ireland have inspired artists from C.S. Lewis to Led Zeppelin.

Northern Ireland's Brobdingnagian stepping stones.

This short bridge is the only thing connecting a tiny Irish island to the mainland.

This centerpiece of the Hollywood & Highland shopping center is a recreation of a long-lost movie set.

Hollywood's most famous landmark, the "temporary" sign that has stood for decades longer than intended.

The decor of this Hollywood movie palace just barely predated the opening of King Tut's tomb.

This star-studded Old Hollywood restaurant is where fettuccine Alfredo made its United States debut.

The mall's looks were inspired by the cowboy extras who used to meet up—and cause real trouble—at this Hollywood hub.

Hiding amid the largest camellia collection in the country lies a charming children's maze, donated by a secret admirer.