Named for a Greek oracle that interpreted the words of Zeus, this beautifully-restored manor home was once home to the architect of the Marshall Plan.

The ruins of an old mill lie in a small ravine along a hiking trail near Little Seneca Creek.

This abandoned Victorian-style house was built in 1884.

The only public school for Black children in the region from 1895-1936.

This monument marks the beginning journey of a wounded soldier's leg that ended up almost two states away.

This suburban park recalls the history of a famous tavern. Despite the name, it's no ordinary place!

The largest cemetery for enslaved people in Loudoun County was almost lost to history, if not for the research of a minister.

Dating to 1793, this is the oldest building in Poolesville.

The all-but-forgotten cemetery is Eastern Loudon County's largest African-American burial ground.

The only U.S. Senator to die on the field of battle is buried in San Francisco but memorialized at Balls Bluff Regional Park.

Once the center of a thriving early Black community called Martinsburg.

An eponymous directional signpost erected by the first president of the United States.

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

Historic barracks utilized during both the Revolutionary War and the Civil War.

A Civil War Museum with some notable medical antiques.

This four-story steel sphere in Maryland was used to test biological weapons.

The Cold War-era "underground Pentagon" is a sprawling subterranean hideaway for the Defense Department.

Built in the 1970s, this curious modular home found new life as a sundae-shaped ice cream stand.

A pre-Industrial Age iron furnace and the site of a nearly-forgotten piece of Black history.

Unannounced visitors are now welcome at the site of the largest Prohibition-era bootlegging operation in the region.

The Grand Ole Opry's big voice came from a small home in rural Virginia where she was eventually buried.

The last holdout of a pre-Civil War rebel who took the matter of slavery into his own hands.

One of the only memorials dedicated to journalists who died in combat.

Time travel with sweets across history at this research-based candy store.