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

Parking garage where Bob Woodward met Watergate source "Deep Throat."

The last holdout of a pre-Civil War rebel who took the matter of slavery into his own hands.

An unassuming, powerful monument north of the U.S. Capitol bears witness to the resilience of Japanese Americans during a time of grave injustice.

Members of Congress have traveled between the buildings on Capitol Hill for a century hidden from tourists, press, and storm clouds.

There just so happens to be a court even higher than the U.S Supreme Court: a basketball court in the building itself.

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

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.

Housing the National Women's Party since 1929, this historic house is now a monument to the fight for gender equality.

A historic arena where the Beatles played their first concert in the U.S.

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

The United States Capitol's former columns still stand.

Bar full of oddities, specimens, artifacts and homages to the great dime museums of the past.