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

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

The bank that helped fund the Mexican-American War and the purchase of Alaska met its downfall after helping Augusto Pinochet launder money.

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

This seemingly out-of-place gas station by the Watergate hotel was once described as the most expensive gas station in the world.

Legend has it that President Grant’s frequent drinking in the lobby gave rise to the term “lobbyist.”

Before Nixon, "watergate" meant canals.

D.C.'s first central library was born out of a chance encounter with the philanthropist whose name it bears.

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

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

The most accurate timepiece in the world.

Once the supplier for noteworthy projects like the National Cathedral, this old brickworks now lies abandoned.

A much-maligned monument to teetotalism.

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

"Congress may voluntarily remain in session throughout the summer, in order that our Congressmen may be protected from the intolerable discomforts and dangers of the ordinary outdoor weather!”

Fittingly, America's museum of architecture is itself a magnificently designed old building.

Rumor has it the uncarved lump behind the three famous suffragists is reserved for the first woman president.

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

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

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.

The beloved statue at the National Academy of Sciences is oh so inviting to sit on.

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

The house where John Wilkes Booth conspired with his co-conspirators.

Largest Roman Catholic church in North America.