The Ringstraße is the boulevard Franz Joseph built when he pulled the city walls down — a horseshoe of monuments where the fortifications used to be, each one a different borrowed century. Three and a half kilometres of it, walked the good way, with the Ring tram rattling past whenever you tire of your feet.
Begin at the Staatsoper and head anti-clockwise. Maria-Theresien-Platz lines up the two great museums face to face — Kunsthistorisches for the paintings, Naturhistorisches for the bones — with the empress enthroned between them. Choose one; both is a different day.
On past the Parlament, a Greek temple with Athene out front, to the Rathaus and its busy park, and the Burgtheater answering it across the road. This is the boulevard's set-piece stretch: two pairs of buildings, each pair conducting an argument in stone over the traffic.
Finish at the Universität and the Votivkirche's twin spires. Schottentor and the U2 are at your feet — or hop the tram one stop and pretend you walked it all.