An easily overlooked memorial to a Ukrainian famine-genocide that killed over 4 million people.

A line of blue paint marks the route of the inaugural parade.

Washington's iconic carousel has a nice piece of Civil Rights history.

One of the most influential presidents in U.S. history wanted only this plain, elegant monument as his lasting memorial.

A tiny monument to the unsuccessful attempt by Thomas Jefferson to place the prime meridian in Washington.

A historic estate packed with George Washington's heirlooms, and its own nuclear bunker.

A bas relief commemorates the "Nuns of the Battlefield" who cared for soldiers on both sides of the conflict.

The monument's pointy aluminum tip has been melted down by repeated lightning strikes.

Decades before the scandal, this staircase on the river was a literal "water gate."

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

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.

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.

There's a 12-foot-tall replica of the Washington Monument hidden under a manhole nearby.

Fragments of architectural wonders from around the globe are embedded in the newspaper building's walls.

This bronze sculpture on a former squash court marks the secret origins of the Atomic Age.

This urban drawbridge gained eternal pop culture fame when the Blues Brothers jumped it while it was raised.

Once called the "Polish Gold Coast" it is an icon of the neighborhood that bears its same name.

A hot dog stand where the heads are just as hot as the dogs.

The palatial McDonald's that inspired Wesley Willis.

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

Years of archaeology, just chillin' by the water cooler.

A lush green oasis in the middle of Chicago.

Four glass boxes hover over 1,000 feet in the air to give visitors an unparalleled view of Chicago.