Beneath the southern end of the Golden Gate Bridge is the “Gibraltar of the West Coast,” a fort built to protect the San Francisco Bay from naval attack.

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

A modern frieze of ancient Grecian mythological figures playing a national pastime.

The only standing town in the United States that early Chinese Americans built for themselves.

Officially named the "Loneliest Road in America," this barren stretch of Nevada road offers almost nothing but sky and open fields.

The current Eureka County Courthouse replaced an all-wooden structure that had previously been an ice-skating rink.

A gothic palace of endless stalagmites and pseudoscorpions waits within one of the world's most beautiful caves.

The world's largest dead polar bear, immortalized by taxidermy and Hunter S. Thompson.

In the middle of a remote desert town is a surprisingly opulent hotel.

An errant donkey ushered in a new era of mining in Nevada.

Dyed by iron oxide over centuries, these sandstone rocks rise thousands of feet into the sky.

The drama of nature in full effect in this Nevada State Park.

Named after an outlaw who used the basin as a hideout.

A Norwegian-born sculptor created these soaring guardian angels at the entrance to Hoover Dam.

These markers are used to document elevation changes around the famed dam.

At Washington's Dulles Airport is a satellite museum (no pun intended) with three quarters of a million square feet of aircraft history.

"A hideous albatross in the Hudson River Valley."

The Hudson River School comes alive at this palatial estate.

An old trolley bridge was converted into a breathtaking garden bursting with colorful flowers.

Inspiring Herman Melville and Henry David Thoreau, Mount Greylock in western Massachusetts is the highest point in the state at 3,491 feet above sea level.

The hero of the women's suffrage movement birth home is now a museum dedicated to her legacy.

Take a step inside the picturesque studio of America’s most renowned sculptor.

The mansion home of author Edith Wharton.

Wander the sprawling living museum on the site of one of a 16th-century community.