One-Million-Liter Test Sphere
Historic structure · outside city limits
One-Million-Liter Test Sphere is a historic place in Frederick County, Maryland, listed on the National Register of Historic Places on 1977-11-23.
Place facts
- Category
- Historic structure
- Resource type
- Structure
- State
- Maryland (MD)
- County
- Frederick County
- NRHP reference number
- 77000696
- Coordinates
- 39.43440, -77.42874
- Listed on the National Register
- 1977-11-23
- Nearest city (outside city limits)
- Frederick
Location
Published coordinates: 39.43440, -77.42874. These are the coordinates as published by the source; they are never estimated or geocoded.
Sources
Every fact on this page comes from the registered datasets below, cited per claim and carried through an independently verified content release.
- Listing recordNational Park Service, nps.nrhp-listed (version 2026-05-22), NRHP reference 77000696
- CoordinatesNational Park Service, nps.nrhp-points-md (version 2026-09-03), NRHP reference 77000696