York City Walls
Don't miss the chance to walk York's City Walls (www.yorkwalls.org.uk), which follow the line of the original Roman walls and give a whole new perspective on the city. Allow 1½ to two hours for the full circuit of 4.5 miles or, if you're pushed for time, the short stretch from Bootham Bar to Monk Bar is worth doing for the views of the minster.
Start and finish in the Museum Gardens or at Bootham Bar (on the site of a Roman gate), where an exhibit provides some historical context, and travel clockwise. Highlights include Monk Bar, which is the best-preserved medieval gate and still has a working portcullis, and Walmgate Bar, England's only city gate with an intact barbican.
At Monk Bar you'll find the Richard III Experience, a museum which sets out the case of the murdered 'Princes in the Tower' and invites visitors to judge whether their uncle, Richard III, killed them. The Henry VII Experience at Micklegate Bar charts the history of the city walls and the reign of England's first Tudor king.