Connecticut bills itself as the "Haunted State" — with over 45 documented haunted locations, the highest density per square mile in the U.S. (per Ghostly New England, Haunted Connecticut guides, and CT Office of Tourism).
| Site | Town | Legend / Phenomena |
|---|---|---|
| Union Cemetery | Easton | "White Lady" (woman in white gliding among stones), red-eyed phantom, EVP hotspot. |
| The Black Castle (Ives Manor) | Litchfield | 1890s stone mansion; suicides, hidden rooms, voices, cold spots, apparitions in tower. |
| Mark Twain House | Hartford | Twain family tragedies (daughter Susy died here); footsteps, cigar smoke, figures in billiard room. |
| Gillette Castle State Park | East Haddam | William Gillette (Sherlock Holmes actor) eccentric stone castle; secret mirrors, moving walls, "ghost cat." |
| Old New-Gate Prison & Copper Mine | East Granby | Colonial prison in copper mine; suffocation deaths, "Blind Miner" ghost, whispers in tunnels. |
| Stanley-Whitman House | Farmington | 1720 saltbox; Revolutionary War hospital; woman in colonial dress, children's laughter. |
| Connecticut State Library | Hartford | Stacks: books fly, footsteps, "Lady in Grey" (librarian who died at desk). |
| Dudleytown (Dark Entry Forest) | Cornwall | Abandoned 18th-c. settlement; "cursed" — madness, lightning strikes, vanishings. Private land — no trespassing. |
| Whittlesey Cemetery | Middlebury | 18th-c. stones; "Weeping Statue," orb photos, phantom funeral processions. |