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

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

An astounding collection of medical specimens, including bits of President Lincoln.

She stares out across six lanes of traffic, clutching a musket and infant with determination.

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

A tribute to the beloved, kind-hearted "homeless mayor" of Silver Spring.

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

Giant acorn-shaped 19th century gazebo from which suburban Washingtonians gazed upon the original "silver" spring.

An intricately designed junk art house with four extravagant junk art cars hidden in the suburbs.

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

A lovely aquatic park built by a one-armed Civil War veteran who made a fortune from lotuses.

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

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

These abandoned waterworks are crumbling into the Potomac River.

Every drop of D.C. tap water flows through this old waterworks.

Government testing at the asylum briefly explored using marijuana as a "truth serum" on Nazi prisoners of war.

The system of air guns are fired off remotely to scare any trespassing avians.

A Civil War fort in the middle of Washington, D.C. has been swallowed by a forest.

Washington's top-secret Cold War-era doomsday communications tower is located in a small neighborhood park.

The only Civil War battle in Washington D.C. took place near this highest natural point in the city.

The span is crooked and made from two older recycled bridges.

The famous abolitionist’s preserved estate is one of Washington's finest monuments to its great Black citizens.

Enormous piles of historically significant stones, dumped by Congress in a forest, and abandoned for 60 years.

Once the supplier for noteworthy projects like the National Cathedral, this old brickworks now lies abandoned.