It's not hard to see why the historic Peabody Conservatory of Music's library has been described as a "cathedral of books."

This taxidermy horse was a Civil War hero.

The first memorial dedicated solely to the Black troops who fought for the Union.

This unique museum cafeteria showcases the history and regional diversity of African American cuisine.

Sit where JFK proposed to Jackie or where Nixon dined on meatloaf at this storied pub.

This restaurant has been a haven for D.C.'s LGBTQ community since the 1950s.

This stately mansion, built in 1787 by America's first Secretary of the Navy, is rumored to be one of the most haunted buildings in Washington, DC.

Senators used to relax in the nearly forgotten marble tubs now hidden in the U.S. Capitol Building's basement.

Those with a sharp eye can find the hidden image of a German Shepherd on the memorial's Mural Wall.

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 museum cafe showcases Native American dishes and indigenous ingredients from across the Western Hemisphere.

Perhaps the most scandalous statue of America's first president.

Four bald cypress trees in Lafayette Square, across from the White House, mark the southern edge of a 100,000 year old cypress swamp.

Seemingly unremarkable items like empty sushi trays, chef hats, and freshness stickers are being preserved so future generations can look back on this beloved cultural import.

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

Cold War intelligence agents monitored communist embassies from an attic in a former pigeon coop.

An obscure public service from the U.S. government that redeems burnt, moldy, and soiled old greenbacks.

The famous abolitionist’s preserved estate is one of Washington's finest monuments to its great Black citizens.

The oldest continuously operating fish market in the United States.

An Industrial Revolution-era public work that purified water using nothing but sand.

The national park was once a plantation estate.

The walls of the iconic dome are hollow and have a secret stairway.

People escaping slavery may have hidden inside a corpse vault.

The Byzantine, pre-Columbian, and medieval art at this stately mansion are some of the most under-appreciated collections in D.C.