A museum dedicated to the history and exploration of both popular music and science fiction.

A walk through the historic city center, under the streets of Seattle.

Heron, whitewater rapids, and urban industrialism all add to the beauty of this concrete nature walk.

This museum devoted to the gothic author holds such interesting ephemera as his socks and walking stick.

A bygone village occupation lives on via this quaint public chalkboard.

The highest peak in the state of Vermont has some interesting features.

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

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

A sculpture made of 10 Cadillacs as a monument to the "Golden Age" of the American automobile.

This replica of the Greek structure is in the heart of Nashville.

There aren't too many operational funiculars around, but Pittsburgh has two!

The United States’s oldest funicular railway glides up and down a steep Pittsburgh street.

A man-made island in scenic San Francisco Bay.

Not merely a museum – but a whirring powerhouse that offers a subterranean peek into the heart and soul of cable car operations.

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

The seawater playground of gilded-era San Francisco burned to the ground in 1966.

San Francisco's newly reopened hands-on science museum.

A walk-in working camera obscura produces 360-degree live images of the San Francisco coast.

2300-year-old Roman road connecting the empire.

The only "Egyptian" pyramid in Europe and the legendary tomb of Remus.

The last moments of the ill-fated Pompeiians, frozen forever in plaster.

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

Michael Jackson got Bad and Crocodile Dundee walked on heads in this iconic Brooklyn subway station.

Once called Winthrop Park in 1889, home to a decidedly sexy tribute to the Monitor vs. Merrimac battle.