Historic sites in or near Guilford, which may be listed on the National Register of Historic Places, include:
Acadian House 
Thomas Burgis II House
Benton-Beecher House, a.k.a.
Beecher Stowe House, visited by Harriet Beecher Stowe as a child
Comfort Starr House
Dudleytown Historic District
Jared Eliot House
Falkner's Island Lighthouse
Thomas Griswold House
Guilford Historic Town Center
Hyland-Wildman House
Medad Stone Tavern
Pelatiah Leete House
Meeting House Hill Historic District
Elisha Pitkin House
Route 146 Historic District
Sabbathday House
Henry Whitfield House
Historic sites in or near Guilford, which may be listed on the National Register of Historic Places, include:
Acadian House 
Thomas Burgis II House
Benton-Beecher House, a.k.a. Beecher Stowe House, visited by Harriet Beecher Stowe as a child
Comfort Starr House
Dudleytown Historic District
Jared Eliot House
Falkner's Island Lighthouse
Thomas Griswold House
Guilford Historic Town Center
Hyland-Wildman House
Medad Stone Tavern
Pelatiah Leete House
Meeting House Hill Historic District
Elisha Pitkin House
Route 146 Historic District
Sabbathday House
Henry Whitfield House
Guilford, Connecticut