- Hidden Valley Nature Center
- 131 Egypt Road, Jefferson, ME
- Historic Church
- 1211 Main Road, Westport Island
- Historic Head Tide Church
- 17 Head Tide Church Road, Alna, Maine, 04535
- Historic New England
- 2 Lee Street, Wiscasset, Maine, 04578
- Hodgdon Green
- 6 Hodgdon Street, Damariscotta, Maine
- Hodgdon Yachts Services
- 100 Ebenecook Road, Southport
- Hog Island Audubon
- 12 Audubon Road, Bremen, Maine
- Home of Bill Messmer
- 11 Cozy Harbor Rd, Southport, ME
- Home of Christopher and Valarie Johnson
- 3230 Turner Ridge Road, Somerville, Maine
- Home of Jo Cameron
- 234 River Road, Edgecomb, ME