National Register of Historic Places
Portland Observatory
Also designated a National Historic Landmark.
Portland, Cumberland County, Maine
The record
- Listed
- April 24, 1973
- Type
- Building
- Address
- 138 Congress St., Portland
- County
- Cumberland
- State
- Maine
- Period of significance
- 1800 to 1824
- Contributing resources
- 1 building
- Coordinates
- 43.66540, -70.24824
- Reference number
- 73000122
Slide toward Today to fade the historical sheet and see the modern map underneath.
The outline is the area recorded for this listing in National Park Service map data, drawn approximately.
David Rumsey Map Collection, Stanford LibrariesDigital Commonwealth, Boston Public LibraryDavid Rumsey Map Collection, Stanford LibrariesBarry Lawrence Ruderman Map Collection, Stanford Libraries