Willunga Courthouse Museum

The Willunga Courthouse Museum is a heritage museum housed in the former Willunga Courthouse and Police Station on High Street, Willunga, about 47 km south of Adelaide in the City of Onkaparinga. Built in 1855 from local slate, it served as the local courthouse, police station and cells until the 1920s. Operated by the National Trust of South Australia (Willunga Branch), it displays local history including slate quarrying, almond growing and early settlement.

Visitors can expect a small single-storey stone courthouse building with original courtroom, former police station rooms and former cells. Inside are displays of photographs, documents, household objects, agricultural tools and slate industry artefacts relating to Willunga and the wider Onkaparinga district. The museum is volunteer-run and set on High Street in the historic township, with a small garden and interpretive signage. Guided interpretation is available when volunteers are present.