For boston: (not including the obvious brookline/cambridge/somerville which are essentially boston)
Newton is kinda cute!:
https://www.google.com/maps/@42.3297...7i13312!8i6656
https://www.google.com/maps/@42.3217...7i13312!8i6656
Winchester too:
https://www.google.com/maps/@42.4525...7i13312!8i6656
Norwood's okay:
https://www.google.com/maps/@42.1929...7i16384!8i8192
This one part of Dedham center is nice:
https://www.google.com/maps/@42.2481...7i16384!8i8192
Quincy is great, and they have done tons of work on the center recently:
https://www.google.com/maps/@42.2505...7i13312!8i6656
Also home to one of the largest east asian/chinese population in greater boston:
https://www.google.com/maps/@42.2677...7i13312!8i6656
Medford is cool:
https://www.google.com/maps/@42.4183...7i16384!8i8192
Malden has some great areas, and has done a lot around the T station but it kinda sucks in how it feels:
https://www.google.com/maps/@42.4263...4nLcmJVplA!2e0