I love street art that is well executed and Boston has its fair share, although it didn’t make The Huffington Post’s article. Two of my favorites include this image that was commissioned for the Revere Hotel by the Pandolfo brothers from Sao Paulo, Brazil, who go by Os Gêmeos (meaning The Twins), when they were invited to come to Boston for their first solo exhibit in the US back in 2012.
Another noted street artist Shepard Fairey use to have a lot of street art in Boston (and especially in my neighborhood) like this image below which use to be visible on East Berkeley Street. 
If you like this sort of thing, check out the Huffington Post article, 26 Best Cities in the World to See Street Art.
BosGuy 