Once, in days of yore, you could drive down Walbridge Street in Allston and just cross the town line and behold, you would find yourself on Columbia Street in Brookline.
Then one day, the good citizens of Allston awoke to find Brookline had erected a wall to keep them out, because, of course, you know the sorts of things Allston residents would do in Brookline if only they could still get into the leafy town.
Although relations between Boston and Brookline have since warmed up a bit, to this day, Walbridge Street in Allston abruptly ends at this wall at the Brookline line. Where is our Reagan to demand they tear this wall down, or, at the least, trim those damn weeds? They make Brookline look pretty crappy.