shinwook0730's User Profile - Atlas Obscura
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Washington, D.C.

USNO Master Clock

The most accurate timepiece in the world.
Washington, D.C.

Knife Edge

Architecture lovers won’t stop touching the National Gallery's 19.5 degree marble prow.
Washington, D.C.

Washington Monument Access Hatch

Daredevil repair workers can worm their way out the access hatch, loop ropes over the apex and rappel down the monument.
Washington, D.C.

Library of Congress Book Conveyor Tunnel

A fantastic array of trays and cables once whisked books over to the Capitol at 600 feet per minute.
Washington, D.C.

Site of the Knickerbocker Disaster

You could be standing at the site of one of D.C.'s most fatal tragedies and not even know it.
Washington, D.C.

Washington Stock Exchange Building

D.C. once had its own tiny rival to the New York Stock Exchange.
Washington, D.C.

Starship Enterprise NCC-1701

The actual model from the original "Star Trek" series is now on display at the National Air and Space Museum.
Washington, D.C.

Amelia Earhart's Lockheed Vega

The "lovely red Vega" of the legendary record-settling pilot.
Washington, D.C.

FDR's Swimming Pool

There's an old indoor swimming pool hidden directly underneath the White House Press Briefing Room.
Washington, D.C.

Mount Zion Cemetery's Underground Railroad Shelter

People escaping slavery may have hidden inside a corpse vault.
Washington, D.C.

Eritrean Cultural Civic Center

Daily lunch spot for many of Washington, D.C.'s cab drivers.
Washington, D.C.

Treasury Department Cash Vault

Where the U.S. government kept its actual treasure, before Fort Knox.
Washington, D.C.

Government Printing Office

Need a hardcopy of the 50-title Code of Federal Regulations? This is the place.
Washington, D.C.

Senate Bathtubs

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

Washington Coliseum

A historic arena where the Beatles played their first concert in the U.S.
Washington, D.C.

Abandoned Drawbridge Control Room

The hidden offices underneath Memorial Bridge have been locked up since 1976.
Washington, D.C.

Peirce Mill Spy Station

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

FDR's Bomb Shelter

The first presidential bomb shelter was located in an old vault under the Treasury, connected to the White House via tunnel.
Philadelphia, Pennsylvania

Wanamaker Building

The first American department store, and home to the largest operating musical instrument in the world.
Philadelphia, Pennsylvania

Masonic Temple of Philadelphia

Huge masonic hall in Philadelphia with lavishly themed rooms.
Philadelphia, Pennsylvania

America's Oldest Operating Theater

In the early 1800s, surgery was also a show.
Philadelphia, Pennsylvania

Mount Moriah Cemetery

An abandoned cemetery lies in ruins as the surrounding forest swallows it whole.
Philadelphia, Pennsylvania

Shofuso Japanese House and Garden

Philadelphia boasts one of the best — and most often overlooked — traditional Japanese gardens in North America.
Philadelphia, Pennsylvania

Site of the Jefferson Street Ballpark

The humble field where the first Major League Baseball game was played.