The world’s oldest and biggest bookstore stocking only mystery, crime fiction, espionage, and thrillers.

A room in New York City that contains 250 cubic yards of dirt worth a million dollars.

Plot your trip through the city on the sidewalk.

A terrific purveyor of natural history objects and curios.

A strangely angled West Village home is the only monument to an explosion that took the lives of three American revolutionaries.

Named the fifth most beautiful building in America in 1885, this former courthouse boasts the best view in the Village.

New York City's smallest piece of private property.

An artist's cute bronze subway sculptures belie his violent artistic past.

Mysterious stone tower featured in many alternative histories of the New World.

Macabre astrological automaton clock dating to the late 1400s.

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

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

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

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.

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

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

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

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

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 celebrated eyesore created by starry-eyed sweethearts.

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

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

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