The headquarters of the Audubon Naturalist Society is a small slice of heaven for nature lovers.

The rooster who crossed the road lives on forever in Takoma Park, Maryland.

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

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

A benevolent, 16-foot-tall river dragon lives on a suburban lawn.

The stone marker that Mason and Dixon placed at the eastern end of the famous north-south border they surveyed.

Three abandoned missile silos are hiding in plain sight behind a suburban development in Maryland.

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

Rediscovered after a century, the father of the American Navy was reinterred in something dredged up from Davy Jones' Locker.

Brain collection and database that narrows the gap between man and animal.

One of the oldest anatomical theaters in the U.S. still in use was once the site of an infamous cadaver riot.

The design of this historic domed church was influenced by Thomas Jefferson and intended as a statement of religious freedom.

George Washington's dentures and Queen Victoria's dental instruments are in the nation’s official museum of the dental profession.

A remarkable time capsule of American manufacturing deep in Maryland coal country.

A Civil War Museum with some notable medical antiques.

The final resting place of the tragic king and queen of the Jazz Age is tucked away in a small Maryland graveyard.

This scenic Maryland park was the site of one of the worst prison camps of the Civil War.

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

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

A faded sign from the 1920s remembers Baltimore's resistance toward banning alcohol.

Captain John Smith thought these cliffs were amazing in 1608 but sharks thought so 20 million years before him.

Once home to seven different roller coasters, Glen Echo has undergone many transformations since its founding in 1891.

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

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