This striking art museum holds an amazing series of curiosity cabinets.

Twenty-seven massive radio antennas on the high plains of New Mexico search for life on other planets.

This iconic 1958 tower welcomes air travelers to Tucson with neon-lit letters and architectural style.

Staircase winds down the side of Telegraph Hill through gardens, wild parrots flying overhead.

This concrete tangle of square pipes has stood as a proud thorn in the city's side since the '70s.

Home to the largest urban bat colony in North America, estimated at 1.5 million bats.

The Cadillac Ranch for monster truck aficionados.

An ancient chamber filled with wonderful rock art and a Neolithic carving of a human face.

Amidst the bustling streets of Dublin, there is a hushed garden that is dedicated to "All those who gave their lives in the cause of Irish Freedom."

A fearsome dragon clings to a corner of Munich's city hall.

Daily jousts and dancing barrel makers in Munich's mechanical clock.

Golden cobblestones remember a time when this small alley was used to avoid having to give a Nazi salute.

The world's tallest church tower reveals a spectacular view to anyone up to the task of climbing the daunting staircase.

Carved fountains poignantly placed in parks and in front of special monuments.

This bridge was constructed from the rubble of the infamous Bastille.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

The very center of Paris is surrounded by a bevy of strange good luck rituals.

This demon atop the Notre-Dame de Paris looks utterly bored.

The celebrated eyesore created by starry-eyed sweethearts.

France's most famous cemetery, with some of its most curious tombs.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

London's smallest police station is barely the size of a phone booth.

These official units of measurement—including chains and perches—lie hidden beneath tourists' feet in a popular London hub.