Blood and Guts: The Twists and Turns of Edinburgh's Medical History

The guide's stories come from the Royal College of Surgeons of Edinburgh's own archives, which is how chloroform tea parties end up on the same walk as grave robbing, pioneering women, a few famous writers and Burke and Hare.

You meet your guide at the statues outside Surgeons' Hall Museums at 2pm and cover 1.2 miles of the Old Town: the University of Edinburgh, Greyfriars Kirkyard, then the longest leg, about ten minutes, to Old Surgeons' Hall on Infirmary Street, before finishing back at the museum. Groups are capped at 30, and guides will adapt the route for access needs if you tell them at the start.

It runs outdoors whatever the weather, on Saturdays and Sundays until 29 November, so dress for it. The museum says 70 minutes; Eventbrite says 75 to 90 and suggests allowing an hour and a half. Tickets cost £9.95 to £19.95, are sold only on Eventbrite with your name on the guest list, and include entry to the museum that day.