Traveling Maven's User Profile - Atlas Obscura
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Places visited in Paris, France
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Places visited in Butte, Montana
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Places visited in Montana
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Frederick, Maryland

One-Million-Liter Test Sphere

This four-story steel sphere in Maryland was used to test biological weapons.
Suitland-Silver Hill, Maryland

Cedar Hill Cemetery

A historic cemetery filled with quirky faux wood art and unique tombstones.
Gaithersburg, Maryland

World's Largest Deadweight Machine

The U.S. government built the million-pound stack of steel during the Space Race.
Greenbelt, Maryland

Greenbelt Historic District

A relic of FDR's brief foray into utopian urban planning.
Gaithersburg, Maryland

U.S. National Prototype Kilogram

This golfball sized platinum iridium cylinder is the official starting point for all national weight calibrations
Fort Washington, Maryland

Fort Foote Rodman Guns

A mammoth pair of Civil War artillery guns abandoned out in the forest.
Bowie, Maryland

National Capital Radio & Television Museum

The development and impact of electronic media showcased in a picturesque farmhouse in Maryland.
Big Pool, Maryland

Fort Frederick

A star fort along the C&O Canal in western Maryland that protected America in three wars.
Germantown, Maryland

Earthoid Water Tank

The whole world in one water tank.
Colmar Manor, Maryland

Bladensburg Dueling Grounds

Politicians, bureaucrats, and military officers gathered in this field near the Capitol to settle their disputes with blood.
Annapolis, Maryland

John Paul Jones' Crypt

Rediscovered after a century, the father of the American Navy was reinterred in something dredged up from Davy Jones' Locker.
Thurmont, Maryland

Catoctin Furnace

A pre-Industrial Age iron furnace and the site of a nearly-forgotten piece of Black history.
Crownsville, Maryland

Crownsville Hospital Center

This former asylum for Black Americans is haunted by its history of violence and racism.
Fort Meade, Maryland

Architect of the Capitol Archival Warehouse

A remote horde of architectural treasures fit for Indiana Jones.
Middletown, Maryland

The (First) Washington Monument

Built by the patriotic residents of Boonsboro in a single day.
Laurel, Maryland

Laurel Dinosaur Park

This dig site outside D.C. is known for its exceptionally high density of baby dinosaur fossils and dinosaur eggs.
Glenn Dale, Maryland

Glenn Dale Hospital

An FDR-era tuberculosis sanatorium has stood abandoned in the suburbs of the U.S. capital for over 30 years.
Ellicott City, Maryland

Daniels

An eerie, decaying ghost town destined to fade into the forest.
Fort Meade, Maryland

National Cryptologic Museum

A priceless collection of the Nation's cryptologic history.
Fort Meade, Maryland

Forest Haven Asylum

This abandoned asylum was once a state of the art facility before devolving into one of the most deadly mental institutions in American history.
Ellicott City, Maryland

St. Mary's College

The haunting "Hell House Altar" is one of the few remnants of an abandoned college that has been a magnet for local legends.
Washington, D.C.

Site of the Union Station Train Crash

A 1,100-ton train fell through the floor in 1953. Workers got it patched up in just 72 hours.
Washington, D.C.

The Lockkeeper's House

A derelict bit of infrastructure from the canal that once ran through D.C. is landlocked in the heart of the city.
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.