Davis Square straddles Cambridge and Somerville. It’s one of the last stops on the Red Line. The neighborhood burst onto the scene in the late 1990s and never looked back. Utne Reader named Davis Square one of its hippest neighborhoods. Residents are a lively mix of Tufts University students, empty-nesters, professionals and aging residents who may be recognized by their Birkenstocks. It’s a dense, urban neighborhood with few open spaces but loads of restaurants and distinctive shops. The square has become so popular that chain eateries are moving in.