Pisserenden is the alley quarter Strøget's pedestrianisation passed over — the lanes between Vor Frue Kirke and Kultorvet that were too narrow for cars to bother with even before 1962, so they didn't need rescuing. Design shops, second-hand bookshops, cafés with three tables on the cobbles, and the cathedral at one end.
Two and a half kilometres, seventy-five minutes if you stop for coffee. Start at Nørreport and walk south. Vor Frue Plads opens with the cathedral — C.F. Hansen's 1829 neoclassical rebuild after the British bombardment of 1807 destroyed the medieval original. Bertel Thorvaldsen's Christus stands in the apse, the most-copied religious sculpture of the 19th century.
The alleys begin south of the cathedral. Larsbjørnsstræde, Studiestræde, the small lanes off them — design shops (Hay's mothership, small Danish brands), the better second-hand bookshops in the city, the coffee locals actually drink. The pace is the show.
End at Gråbrødretorv — the Grey Friars' Square, on the site of the 13th-c monastery, now lined with cafés that put benches on the cobbles in summer. Five minutes south to Rådhuspladsen.