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

This massive melon is a recreation of a similar gate from the Pan-American Expo.

A beautifully designed asylum was resurrected as a hotel and art center with a ghost story or two.

Ruins of a once-prized railroad station in New York.

The seat of Buffalo government is a gorgeous Art Deco palace.

The absurd creation is a compulsory destination for selfies in Buffalo.

A historic neighborhood church is reborn as a psychedelic arts collective.

A local prank turned town icon.

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

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

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

The United States Capitol's former columns still stand.

This isn't your average roadway—it's actually a National Park and a transportation pioneer.

One of the dwarven trees dates back to 1625 and survived the Hiroshima bombing.

A haunting tribute to pioneering photographer Clover Adams.

A super-sized promotional trick that is now a D.C. landmark.

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

The most accurate timepiece in the world.

One critic described it as "middle Mussolini, early Ramses, and late Neiman-Marcus." Another called it an architectural "natural disaster."

At 207 feet, one of the world's longest continuous escalators.

A traveling postal dog covered 48 states and more than 140,000 miles, and he lives on as taxidermy, patched up with a rabbit's foot and a pig's ear.

A hidden gem on the lawn of the U.S. Capitol Building designed by landscape architect Frederick Law Olmsted.

This poor little statue is the most vandalized memorial in Washington.

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