Udforsk York

York's city walls enclose much of the historic centre and partly follow the walls of the Roman fortress founded around AD 71, though most of the surviving stonework is medieval. A walkway runs along the top, past towers and the four main gatehouses, known as bars: Bootham Bar, Monk Bar, Walmgate Bar and Micklegate Bar.

York Museum Gardens are 4-hectare botanic gardens beside the River Ouse, laid out in the 1830s for the Yorkshire Philosophical Society around the Yorkshire Museum. Among the lawns and trees stand the ruins of St Mary's Abbey, the Roman Multangular Tower, the medieval Hospitium and the society's 19th-century observatory.