This rare example of a "tidefall" is a spectacular drop from the cliffs down onto the beach.

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

A massive hydrovolcanic explosion left a half-mile wide crater in Death Valley.

An abandoned Jazz Age dream home and con man's hideout in Death Valley.

Millions of years of oxidation make a drive down this winding Death Valley road surprisingly colorful.

"Only the devil could play golf here."

The lowest point in North America is home to an undrinkable pool surrounded by fields of geometric salt flats.

This giant temperature attraction created some giant electric bills.

The last remaining relic of San Francisco's glittering 1915 Panama Pacific Exposition.

San Francisco's first World's Fair, dedicated to the wonders of California.

Barely visible foundations remain where Stow Lake’s “observatory” once welcomed visitors.

A large instrument played by the wind.

Six ravens are kept captive (but well-fed) at the Tower of London to prevent the fall of the Crown.

A showcase of canine neckwear spanning five centuries of doggie fashion and function.

This skewed English house has looked like it's going to fall over for centuries.

Famously misunderstood wonder of the ancient world

A replica of the steam engine that hauled Queen Victoria's Royal Train is on display at Windsor.

Single runway interrupted by a busy road that cuts across its middle.

It houses the remains of a 17th-century version of the Titanic.

A subterranean house of worship carved right out of the bedrock.

A monument to the three wars that led to German unification towers within a Berlin traffic circle.

The original home of the Lego has a huge amusement park dedicated to the iconic plastic toy.

Vortex-shaped aquarium hosts Europe's largest school of piranhas and other ocean creatures.

Copenhagen's celebrated theme park and gardens.