Somerville has managed to hold onto its blue-collar roots while at the same time gentrifying. It's fairly ethnically diverse, with populations including Irish, Italians, Portuguese, Brazilians (probably the largest ethnic minority), Haitians, Tibetans, Indians, Chinese, and others. It is still the most densely populated city in New England (about 80,000 people in four square miles), so visitors will find lots of purely residential territory between the "fun" areas: Davis Square, Porter Square, and Powderhouse Square (the location of Tufts University). Other notable neighborhoods include Union Square and Winter Hill, erstwhile home of the "Winter Hill Gang", the organized crime group headed by Whitey Bulger in the 1960's and 1970's, as well as East Somerville, probably the last non-gentrified area, which has a substantial immigrant population. Somerville has a number of "squares", which are areas where several of the larger roads come together and which have various stores and parking. The major squares include Davis Square, Teele Square, Powderhouse Square, Union Square, Magoun Square, and Ball Square. Many intersections have small plaques dedicating them as squares named after notable Somerville residents, frequently war veterans, but these areas are never actually referred to by those names. http://wikitravel.org/en/Somerville