This map tells you approximatively where the walks are; you’ll find more details and links to them when you open the post (NB: the walks not yet on this site are still on the old one.)
A 2 hours walk in an often forgotten Boston neighborhood
A 90 minutes walk to explore the North End off the beaten path.
A 3 miles self-guided tour with superb views of Downtown Boston, especially at night.
I need to go and check it again when possible. For the time being, MIT is closed…
A 90 minutes to 3 hours walk to explore the oldest neighborhood of Boston.