National Register of Historic Places

One-Million-Liter Test Sphere

Frederick, Frederick County, Maryland
Listed
November 23, 1977
Type
Structure
Period
Industrial
Ref No.
77000696

About this property

The One-Million-Liter Test Sphere—also known as the Test Sphere, the Horton Test Sphere, the Cloud Study Chamber, Building 527, and the "Eight Ball" (or "8-ball")—is a decommissioned biological warfare (BW) chamber and testing facility located on Fort Detrick, Maryland, US. It was constructed and utilized by the U.S. Army Biological Warfare Laboratories as part of its BW research program from 1951 to 1969. It is the largest aerobiology chamber ever constructed and was placed on the National Register of Historic Places in 1977.

Location

Frederick, Frederick County, Maryland
39.43440, -77.42874

Categories

SCIENCE
National Register nomination ›
Sources

Property data from the National Register of Historic Places, National Park Service (public domain).

Description adapted from Wikipedia under the Creative Commons Attribution-ShareAlike 4.0 International License.

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Nearby Historic Sites

Scheifferstadt
Industrial
0.8 mi
Hood College Historic District
Civil War
1 mi
Wolfe, James K.P., House
Industrial
1 mi
Motter, John C., House
Industrial
1.1 mi
Nallin Farm Springhouse and Bank Barn
Industrial
1.2 mi

Nearby Battles

Frederick MD Skirmish 1864 (Early's Raid)
1864Civil War
1.7 mi
Confederate Occupation of Frederick Maryland
1862Civil War
1.7 mi
Battle of Frederick (1864)
1864Civil War
1.7 mi

Questions about this property

When was One-Million-Liter Test Sphere listed on the National Register?

One-Million-Liter Test Sphere was listed on the National Register of Historic Places on November 23, 1977.

What type of historic resource is One-Million-Liter Test Sphere?

One-Million-Liter Test Sphere is classified as a structure in the National Register of Historic Places.

What is the period of significance for One-Million-Liter Test Sphere?

The period of significance for One-Million-Liter Test Sphere is recorded as the industrial era.

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