Also known as the Blue Church, the building was consecrated to the daughter of Andrew II.

This Slovak bridge is known both for its connection to a national uprising and its UFO-shaped eatery.

This Slovakian statue of an emerging sewer worker might just be a bronze peeping tom.

Baroque celebration of the end of the Great Plague of Vienna.

The final resting place for the remains of 143 Habsburg royalty.

Vienna's diversity-themed traffic lights were inspired by the Eurovision Song Contest.

Built to give thanks for the passing of a plague epidemic, this cathedral is a one-of-a-kind architectural hybrid.

Climb a steep hill in 90 seconds on the second-oldest urban subway in the world.

In this historic region, homes and churches are carved into ancient volcanic rock formations.

A sixth-century Byzantine cistern hidden below a modern carpet store.

An Art Nouveau gem hides beneath the layers of city grime obscuring this once-magnificent building.

Turkish adventurer antiques in the heart of the Grand Bazaar.

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

A fountain standing as a testament to a doomed alliance.

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

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

The mummified right fist of a 1,000-year-old saint-king sits inside an ornate golden reliquary.

Tucked away near more famous landmarks lies a statue meant to symbolize the confluence and continuing development of human culture.

A random tree outside a Budapest hotel has become a DIY shrine to the late singer.

Legions of Roman soldiers bathed in this ancient spa complex under a Budapest transit station.

From Austrians to Nazis to Soviets, this historic Budapest fortress has a history as complex as the city itself.

This camera store in Milan holds one of Europe’s largest collections of luxury-antique cameras.

In upstate New York, gorgeous waterfalls and a watermill are slowly being reclaimed by nature.

Next to the Leaning Tower of Pisa is a cemetery home to ancient sarcophagi and disturbing murals.