Thankful Arnold House Museum

A late-18th-century house museum run by the Haddam Historical Society, telling the story of the Widow Thankful Arnold; its gardens are recognized as one of Connecticut's Historic Gardens. Open Wednesday 9 a.m.–3 p.m., Thursday noon–6 p.m., Friday noon–3 p.m., plus Sunday 1–4 p.m. June through September. Admission $10 adults, $8 seniors, $5 children 5–17; phone (860) 345-2400.