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

The last of nine massive kilns that produced many of the red bricks for buildings in Washington, D.C. and northern Virginia in the early 20th century.

A weathered, American Foursquare-style house originally built for lumber merchant William Wimsatt.

This field of concrete was once an active defense site armed with nuclear warheads.

One of the oldest standing structures in Montgomery County, Maryland.

This twice-relocated "Usonian" home is among the smallest built by master architect Frank Lloyd Wright.

The only tennis court that falls under the jurisdiction of the central bank.

For 60 years, the academy had no permanent location until members voted Washington D.C. as its forever home.

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

People escaping slavery may have hidden inside a corpse vault.

A diminutive memorial marks the site of a successful assassination by a right-wing death squad in America's capital.

A massive, majestic mammal watches over pedestrians from his perch atop a former B.P.O.E. lodge.

The semi-reclaimed ruins of this canal were once part of an ambitious plan to reroute the mighty potomac.

The privately owned cemetery that holds room for Washington's finest when they step down from life.

The only remaining African American schoolhouse in northern Virginia is now a museum dedicated to formerly enslaved people.

This pharmacist and his patient greet visitors to the National Community Pharmacists Association.

This mysterious structure by the Washington Monument is a flood barrier designed to protect the White House against rising waters.

A derelict bit of infrastructure from the canal that once ran through D.C. is landlocked in the heart of the city.

A haunting tribute to pioneering photographer Clover Adams.

A memorial to a shareholder activist feared by CEOs around the United States.

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

Hidden on the seventh floor of a historic building, this Cajun spot features wall-to-wall bottles of hot sauce.

The twin towers in this Chicago fountain use 50 foot tall video screens to spit on people.

These trees are living witnesses to events that inspired poet Walt Whitman’s service during the American Civil War.