A 60 to 75 minute codebreaking walk for the whole family.
The title here is a little misleading. How on earth can it take 75 minutes to turn a corner and down a road?! Don’t fear, we are going the other way around, down towards the Grand Arcade, past a few good pubs and a jaunt on the west side of the River Cam. You have to solve a code to save the city from a notorious villain too.
Start at the Round Church though.