A high school astronomy enthusiast designed this model of our solar system to be traversed on foot.

While not recognized by Guinness, this chocolate waterfall is likely to be the world's largest.

This rare triple-jurisdiction drawbridge passes through Virginia, Maryland, and Washington, D.C.

A mammoth pair of Civil War artillery guns abandoned out in the forest.

Evidence of a long-ago crush remains scratched into the glass at this historic Maryland House.

This fort down the Potomac from Washington, D.C. was once the only defensive fort protecting the capital.

A haunting exhibit in a wildlife refuge center highlights threatened species and the conservation efforts needed to save them.

This dig site outside D.C. is known for its exceptionally high density of baby dinosaur fossils and dinosaur eggs.

A small park honors the legendary Ukrainian poet.

Learn about our ancestral eating habits at the passion project of an archeologist.

According to local history, this cast-iron canine was nearly melted down for bullets during the Civil War.

This three-story Victorian mansion is now home to the National Park Service’s Historic Preservation Training Center headquarters.

Washed out by the Johnstown Flood in 1889, the surviving portion of the original two-span bridge now resides at Fishing Creek.

First built around 1848, this bridge was destroyed by arson, but original timbers are included in the replacement.

The smallest covered bridge in Maryland.

Take a trip to the past aboard a 1920s railcar or open flatcar for a scenic ride through Maryland farm country.

This giant, rotating globe was built to celebrate the expansion of a company that makes steam cleaners and pressure washers.

In the parking lot of a fast food restaurant, a statue memorializing a prolific bull elephant.

At the "Garage Mahal" in Houston, car culture is about more than just driving.

This statue in Plaza San Francisco commemorates a beloved figure from 1950s Havana.

His music once banned in Communist Cuba, John Lennon is now immortalized in bronze by Castro, who considers Lennon a "fellow dreamer."

In terms of history and architecture, this is one of the most remarkable cemeteries in the world.

A focal point of the Cuban government, this city square features one of the most iconic images in the country.

Only known mainland rookery of the threatened Stellar sea lion.