One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

The final resting place of the great navigator, or maybe his brother.

Madrid's romantically ornate crystal palace has been offering shelter to plants and art for over a century.

An ancient Egyptian temple in the middle of Madrid, Spain.

Belly up to the bar in Cowtown, don't forget to buy some boots.

Once close to extinction, there is no shortage of elephant seals on the beaches of Año Nuevo State Park.

Life in this isolated, hilltop lighthouse was lonely, but it sure was lovely.

Haunting and beautiful trees, doomed to die.

Forgotten and then destroyed by fire, this was once one of the largest saltwater swimming pools in the world.

An enormous artwork that colorfully celebrates over 150 years of US military achievements.

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

Bring your own cardboard to the slippery slopes of concrete hidden in a neighborhood park.

Noble beasts perhaps, but not the Emperor's dogs.

Gold Rush ship-turned-hotel buried underneath San Francisco's financial district.

Faceless white figures loom over the city from the rooftop.

San Francisco's oldest surviving monument and meeting place for 1906 survivors.

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

The oldest burial ground in the city, final resting place of city founders, Ohlone natives and murderers alike.

Paranormal experiences in this hotel's room 217 led Stephen King to write "The Shining."

The Denver airport is guarded by a 32-foot-tall sculpture of a demonic horse.

A beautiful geyser under environmental threat.

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.

One of America's first dinosaur parks gives a window into Depression-era paleontology.