Rumor has it that to create Boston's streets, urban planners paved the cow paths. Nowhere is that more believable than in Beacon Hill, a delightful warren of narrow cobblestone streets lined with gas lamps that invites leisurely strolling. Stately Greek Revival and Federal architecture sits near colonial townhouses, with nearly everything covered in brick, making for one of the most picturesque parts of town. In fact, Acorn Street in Beacon Hill is one of the most photographed streets in the country. Charles Street is the central hub for dining, shopping, dry cleaning, and even antique doorknobs.