In just seven days, Union Square Donuts is planning to open shop with its first permanent retail presence right here at 201 Somerville Ave in, obviously, Union Square. Of course there are tons of doughnuts in the Boston area, but the vast majority are from Dunkies. In fact, there's a Dunkin' Donuts just 0.2 miles away on the same street and more in nearly every direction. Could Union Square Donuts usher in a second age of the independent doughnut shop? According to Chowder, the shop opens on Valentine's Day.