One of the last Jazz Age "Wonder Theaters" in New York City.

A whimsical village of unique treehouses resides in a Washington forest.

A monument in Washington D.C. marks the spot from which all other roads were supposed to stem.

The longest living non-clonal organisms on Earth.

The largest drain hole in the world.

After starting as a whimsical tourist attraction that eventually found its way to ruin, these renovated canals offer a lush and exotic locale on the Pacific Coast.

The glowing blue Nymphaeum of Emperor Tiberius.

Wild lights and sound effects turn a walk through some caves into an eye-popping 1960s tourist attraction.

This futuristically sylvan church is a glass-enclosed marvel of modern architecture.

Brightly colored 30-foot-tall totems light up the desert sky just outside Las Vegas.

This quirky curiosity shop takes its cues from the world's bazaars.

A 98-room castle in the middle of Toronto that bankrupted a 19th century electricity multimillionaire.

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

A spectacular cave and a beguiling lake.

Tour the sci-fi-esque reality of governmental disease management.

Keshwa chaca, among the last handwoven Incan bridges, crosses Apurimac Canyon in Peru.

Open-air museum with an elaborate sculpture garden, stretching for over 70,000 square-meters.

A seemingly endless landscape of pure salt stretches far across Bolivia.

Japanese national treasure originally built in 593 CE.

Each spring, a dreamlike carpet of bluebells overtakes the forest floor.

See massive fossils that are over 200 million years old in northeastern Arizona.

A Swedenborgian glass church surrounded by redwoods sits perched atop a massive landslide area.

Eighty million natural history specimens call this gargantuan museum home.

Stripes of flowers bloom each spring in a 50 acre rainbow of color.