Constructed in the 1920s, this former pencil factory is now an office building.

A treasure trove of artifacts, books, and artwork from the "golden age" of exploration.

Tucked in the back of this amazing antique store is an important piece of medical history.

The giant pair of sexy legs sticking out the window of this costume store have become its main draw.

A favorite with sightseers, this Norwegian funicular provides easy access to a stunning view of Bergen and its environs.

The celebrated eyesore created by starry-eyed sweethearts.

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

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

The design of this beautifully crafted building was inspired by Norwegian glaciers.

This prison on the Maltese island of Gozo is almost 500 years old, and they have the graffiti to prove it.

The world's largest reflecting pool is just two centimeters deep.

This subterranean necropolis holds three floors of antler-dug grave caves.

Two geological phenomena in one precarious locale: a towering stone window, and a deep blue void.

San Francisco's oldest operating hotel, with a Victorian atmosphere and a "haunted" fourth floor.

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

Shakespeare has been brought to life in this open air theater for the better part of a century.

A favorite Paris bar for U.S. expats, including Gershwin, Hemingway, and James Bond.

A Parisian exterminator's shop whose storefront displays stuffed rats hanging from traps.

A grotto-like lodge decorated with gilded mosaics, rocks and a noisy waterfall was the setting for the most sumptuous pleasure house of 1900s Europe.

Willy Wonka would love this weird half-a-home.

Frank Lloyd Wright's most iconic home dangles over a Pennsylvania waterfall.

Located on 420 acres in the high desert, this spiritual center is dedicated to the "science of the future."

Explore 10 acres of environmental sculptures.

This Prague museum collects brutalist relics and memories from the country's former Soviet rule.