| Name | Styles | Significance | Periods |
|---|
Ayer Main Street Historic District
(Main St. roughly between Park and Columbia Sts.) | Second Empire, Mid 19th Century Revival, Italianate | commerce, architecture | 1925-1949, 1875-1899, 1850-1874, 1900-1924 |
Community Memorial Hospital
(15 Winthrop Ave.) | Colonial Revival | architecture, health, medicine, social history | 1925-1949, 1950-1974 |
Fort Devens Historic District
(Roughly bounded by El Caney St., Antietam St., Sherman Ave., MacArthur Ave. and Buena Vista St.) | Late 19th And 20th Century Revivals | politics, government, military, community planning and development, landscape architecture, architecture | 1925-1949 |
Pleasant Street School
(Pleasant St.) | Colonial Revival | architecture, community planning and development | 1900-1924, 1875-1899 |
