Altstadt
This party-hearty district has been dubbed a beer lover's paradise thanks to the number of breweries in the area serving the local Altbier. Narrow alleys thread their way to some 300 bars, clubs, restaurants, and brew houses. All crowd into the 1-square-km (½-square-mile) area between the Rhine and Heinrich-Heine-Allee. When the weather cooperates, the area really does seem like one big sidewalk café.