Nine hundred years of history on the site of the new Castle Hill Park, with the remains of Sheffield Castle and the uncovered River Sheaf, led by Wessex Archaeology and the Friends of Sheffield Castle for Heritage Open Days. Four tours: 10.15am, 11.30am, 1.30pm and 2.45pm (an hour each). Free, book via Eventbrite.
Part of Castlegate Festival 2026 (12 to 20 September), the free celebration of heritage, arts, music and markets in Sheffield’s oldest quarter, organised by Sheffield City Council and Sheffield BID. Full programme (PDF).