The little-known, 300-year history of the area includes former lives as a bustling tobacco port, parking lot, and industrial dump.

A heroic pigeon that, through a barrage of gunfire, delivered a message that saved over 100 lives in World War I.

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

This lovely pocket park is one of the most under appreciated in D.C.

The most accurate timepiece in the world.

A celebrity from the late Cretaceous period.

The "lovely red Vega" of the legendary record-settling pilot.

A rotating cast of guys and dolls in front of a Washington, D.C. building.

The oldest continuously operating fish market in the United States.

This stunning blue and gold room changed cities twice before becoming part of the Smithsonian.

The national park was once a plantation estate.

The actual model from the original "Star Trek" series is now on display at the National Air and Space Museum.

This imposing Masonic temple a mile from the White House was the first public library in Washington, D.C.

The most decorated dog of World War I is preserved in the Smithsonian.

This lonely waterfront memorial to the men of the Titanic was erected by the "Women of America."

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

Home to items never before seen by the public.

A "Minnesota-style" pizza parlor in the Scandinavian heart of Seattle.

A community gathering place that once housed half-ton tanks and the World's Fair.

Once a year, thousands of naked cyclists flood the streets of a Seattle neighborhood.

The longest and widest floating bridge in the world.

Granting the right of way to ships over surface traffic since 1917.

This working class sculpture pounds his hammer all the livelong day.

This Puget Sound military post has a long, turbulent history as a gateway to the Pacific.