A work of art that pays homage to a Victorian timepiece in Providence.

A touching statue dedicated to Japan's first therapy dog.

A street in front of NASA's D.C. headquarters has been named in honor of the Black women who were essential to early spaceflight.

Home to a 26-foot-tall statue of an American icon.

Long before mobile phones or GPS were available, these sentry boxes provided help for motorists in need.

An ode to the history of telephones inside a telephone building.

The sole surviving medieval street cross in Scarborough.

At the base of the Spring Mountains, a unique nursery packed with desert plants.

The only example of a Paris Métro sign in use at a subway station outside of the French capital. 

The last vestige of a once substantial orchard and farm in the suburbs of Northern Virginia.

Designed by the architect who also had a hand in crafting the Westminster Abbey and Bristol Cathedral.

Outside the Missouri Quilt Museum, this large spool has more than one million yards of thread—and counting.

The longest-covered bridge in the state of Maryland.

In British Columbia, a unique microclimate has allowed these trees to live much longer than they usually would.

With its vaulted ceiling and gilded details, this University of Washington library would feel right at home inside an old palace.

A Jurassic artscape composed of transmission casings and other mechanical parts.

You can find America's highest suspension footbridge at Grandfather Mountain in North Carolina.

Mysterious installations bring levity and light to a sometimes stodgy city.

At the top of the hour, this steam-powered clock's eight brass whistles play "Back Home Again in Indiana."

A throwback to 1980's gaming nostalgia.

Previously a hot spring, this park remains a site of unique history, wildlife, and geology.

The historic home of an educator, abolitionist, activist, and poet.

Constructed by the younger brother of George Washington.

Hidden in the Santa Ynez Mountains off Highway 154, this tiny restaurant once served as a stagecoach stop.