The European towns of Brașov and Râșnov each have proud signs reminiscent of the Hollywood sign.

Turkish adventurer antiques in the heart of the Grand Bazaar.

This remarkably well-preserved Egyptian plinth is pretty well traveled for a giant piece of stone.

Ancient serpentine sacrifice holder that has stood the test of time.

Five sultans and their families rest in eternal splendor, teeming with overlooked beauty and drama.

A marvel of Byzantine engineering under the streets of Istanbul.

Roman ruins top white travertine terraces formed by ancient hot springs.

The deepest underground city in Turkey was designed to protect 20,000 people behind massive stone doors.

A minotaur, a labyrinth, and a dubious restoration pull in visitors from around the world.

This ancient Greek place of assembly and marketplace is being revealed layer by layer below the modern Athens cityscape.

The hallucinogenic center of the ancient world.

Monasteries on rock pillars, once accessible only by frayed ropes.

This exclusive resort has completely covered a tiny Balkan island in a 5-star warren of guest rooms.

A beautiful mountaintop mausoleum devoted to a Montenegrin icon can't seem to make everyone happy.

These historic defenses ensured the city within would survive hundreds of years of occupations, sieges, and invasions.

A tiny church on a man-made island in the Adriatic.

Bridge that died in war and was resurected.

Oriental bazaar in the heart of Sarajevo.

The remains of the last Bosnian fortress to fall to the Ottomans are still standing.

Controversial site of what could be Europe's first pyramid.

A whimsical bridge adorned with decorative dragons.

A miniature train-ride through Slovenia's largest cave system.

Castle and secret tunnel withstood a siege until its owner was killed by the Holy Roman Empire, while sitting on the toilet.

This massive subterranean fissure is known as the "underground Grand Canyon."