Boston is pretty walkable, too.
Example: Some routes between Harvard Yard and Long Wharf take you through residential and nightlife areas where a lot of people life, past biotechs, MIT, a few FAANG outposts, over a bridge with great views, across the Esplanade park, past at least a major hospital, financial district, through North End (Italian restaurants), tourist area, and to harbor walk, to sit on Long Wharf and watch the boats and airplanes.
https://www.google.com/maps/dir/Harvard+Yard,+Massachusetts+...
(Separate from walking, a lot of people bicycle here, and you'll see heavy bikes on some streets during commuter hours, but don't beware that bicyclist safety is so-so here. If you decide to bike instead of walk, watch out for car doors opening into your path, trucks making turns, negligent car drivers, other bikers ignoring road rules, mild resentment of bicyclists, etc. Personally, I just walk, and know that there's a good chance that a driver even going through the busiest Central Square intersection is looking at their phone. :)