This historic lighthouse was well known for the large number of women who served as its keeper.

This suburban house is made of dirt, and almost sparked a revolution in home construction.

The world's oldest continuously operating airport was founded by the Wright Brothers.

A historic cemetery filled with quirky faux wood art and unique tombstones.

The childhood home of the Sultan of Swat is just a line drive away from Oriole Park at Camden Yards.

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

Surrounded by traditional homes, this Tolkien-esque dwelling stands out on a quiet street in suburban Maryland.

Explore the legends surrounding these mythical sea creatures inside this museum.

This lovely tree was a thank you gift from the man known as "Public Enemy No.1."

Dogs, cats, horses, monkeys, frogs, and fish are laid to rest at the second-oldest pet cemetery in the U.S.

Once a thriving business district, this former shopping area is now an urban ghost town in the heart of the city.

This ruined quarry once produced the distinctive red sandstone used for construction projects in Washington, D.C.

An isolated island home to one of the oldest English-speaking communities in the region and Maryland's state dessert.

Fascinating museum dedicated to the under-appreciated medical history of urology features some wince-inducing devices.

This beautiful stone arch bridge wasn't even expected to stand for one day, but people have been crossing it for centuries.

At this former Prohibition speakeasy, electric birds signaled the arrival of hooch.

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

Live data is transmitted from the Atlantic coast to instantly recreate the ocean waves in this fountain at the NOAA headquarters.

Once part of a dam servicing an early 19th century grist mill, the tucked-way falls are a tricky-to-find urban oasis.

A cave on the Maryland border where civilians took refuge during the bloodiest battle of the Civil War.

Despite violent work crews and massive delays this abandoned canal tunnel was built to last into the modern day.

An abandoned church gets a second life as a massive beer hall and event space.

An eerie, abandoned military base engulfed by nature and graffiti is now home to a local park.

An oft-overlooked, magically musical monolith that stands majestically between Arlington Cemetery and the Iwo Jima Memorial.