The Prater is two parks pretending to be one: a clattering nineteenth-century funfair at the near end, and a vast flat green threaded by a single straight avenue at the other. Four kilometres takes you through both, from the wheel to the imperial pavilion and back to the metro.
Come out of Praterstern and the Wurstelprater is on you almost immediately. The Riesenrad — the giant wheel, turning since 1897 — is the anchor: ride it for the slow rotation and the room-sized cabins, or just stand under it. Around it the funfair keeps its old, slightly battered charm; the carousels and ghost trains are better the less they've been restored.
Then walk through onto the Hauptallee, the chestnut avenue that runs straight as a ruler for four and a half kilometres. The fairground noise is gone within minutes and it's trees the rest of the way. At the far end sits the Lusthaus, the octagonal imperial pavilion turned café — earn your coffee by walking rather than taking the tram. Loop back up to the U2 at Stadion to finish.
