Bordered by forest on three sides and the ocean on the other, the Great Dune of Pilat is the highest sand dune in Europe.

This Bordeaux parking garage has 712 indoor spaces, and one outdoor.

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

An unfortunate geological resemblance to Satan has labeled this Pasadena gorge as a passage to the underworld.

Quite simply the largest tree in the world (by volume).

A favorite haunt of dinosaur loving children and hallucinogen loving hippies alike.

Aqueducts have dramatically changed this old lake, now home to tufa towers and its very own species of tiny brine shrimp.

Hollywood's most famous landmark, the "temporary" sign that has stood for decades longer than intended.

During prohibition, corrupt city officials ran drinking dens under the streets of Downtown Los Angeles.

Dramatic river bend surrounds a natural red-rocked pedestal.

A historic hotel that made a cameo in Hitchcock's classic film has no intention of letting guests forget its fame.

Nestled in the heart of San Francisco’s bustling Financial District stands a unique homage to the Mayan and Beaux Arts.

Visible below the waves are memorials to the city's Gold Rush dead.

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

A collection of 20th-century automata, penny arcade games, and musical contraptions.

A winding path built in secret on the edge of the continent.

A huge musical instrument played by the ocean.

This rugged area of red rocks and arches is often considered one of the most beautiful places on Earth.

Bizarre lunar-like landscape with thousands of large stone "hoodoos."

The hike through a narrow river flanked by the 2,000-foot-tall walls of Zion Canyon is one of the best in the world.

Giant, natural amphitheaters made of delicate geological formations called "hoodoos."

Here, at the "world's longest art gallery," you'll find forty miles of ancient petroglyphs and pictographs.

A public fountain that spouts "health water" from a nearby spring.

The short-lived railroad town in central Oregon has been abandoned since the 1930s.