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

A suburban museum tells the story of a historic transportation network and even provides rides in antique trolley cars.

This haunting monument honors the victims of 9/11.

The location where the famed author and abolitionist began his journey to freedom.

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

This one-room doctor's office has been moved twice, and now lives on as a museum.

This general store has stood in the same spot for well over a century.

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

Hidden within an idyllic suburban garden is a memorial dedicated to the victims of a terrifying spree of killings committed on U.S. soil.

These five Art Deco homes were meant to solve the "small house problem."

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

An old pay phone rewired to play local bird calls and songs at the press of a button.

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

Concerned residents saved this historic house and garden from demolition.

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

A diminutive plaque recalls the treetop sniper who almost killed Abe Lincoln.

A historic cemetery with unique artwork, a Civil War fort, and also happens to be the site of the Battle of Bladensburg.

Politicians, bureaucrats, and military officers gathered in this field near the Capitol to settle their disputes with blood.

George Washington once stopped by this house for dinner.

This Georgian-style house built in 1746 is the oldest surviving structure in Bladensburg.

Once used by British troops to gather water prior to the Battle of Bladensburg.

The development and impact of electronic media showcased in a picturesque farmhouse in Maryland.

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

A historic Maryland home that once belonged to a man who has been called "the most insignificant" U.S. Supreme Court justice.