| Name | Styles | Significance | Periods |
|---|
Conneaut Harbor West Breakwater Light
(W breakwater pierhead, harbor entrance) | Moderne, Other | transportation, architecture | 1925-1949 |
Conneaut Light Station Keeper's Dwelling
(1059 Harbor St.) | Late Victorian | architecture, transportation | 1900-1924, 1925-1949, 1875-1899, 1850-1874 |
| Conneaut Works | No Style Listed | prehistoric | 1650-1699, 1500-1599, 1499-1000 AD, 1600-1649 |
David Cummins Octagon House
(301 Liberty St.) | Other | architecture | 1850-1874 |
Harwood Block
(246, 250, 256 Main St.) | Italianate | architecture, entertainment, recreation | 1875-1899 |
Kilpi Hall
(1025 Buffalo St.) | Queen Anne | exploration, settlement, social history, architecture | 1875-1899 |
