Marconi Wireless-Synanon Tomales Bay Headquarters Historic District (Boundary Increase)
Historic place
Marconi Wireless-Synanon Tomales Bay Headquarters Historic District (Boundary Increase) is a historic place in Marin County, California, listed on the National Register of Historic Places on 2025-01-31.
Place facts
- Category
- Historic place
- Resource type
- Historic district
- State
- California (CA)
- County
- Marin County
- NRHP reference number
- 100011433
- Listed on the National Register
- 2025-01-31
- City
- Marshall
Location
No published location
No public geometry is available for this resource. It is a listed historic place with a verified record, but the source publishes no coordinates or boundary for it. Nothing is estimated: a location is never derived from an address, a postal code, a city or a county.
This record does not appear in the source's spatial layer.
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 100011433