Danube Canal

Waterfront · Innere Stadt / Leopoldstadt (1st/2nd)Vienna,Austria

The Danube's old city arm through Vienna, its concrete banks the largest painted surface in the city, repainted so often no two visits match.

The Danube Canal is the Danube's own city arm, close to seventeen kilometres of it, and its walls are the largest painted surface in Vienna. The concrete along both banks is sprayed, painted over and sprayed again, so the corridor turns over completely within a season and no two visits look alike. Standing in the middle of it is Otto Wagner's control house of 1904 to 1908, faced in cobalt blue tiles with a wave pattern. Wagner's control house was built to work a weir that was never constructed, and it has been a restaurant since the 1970s, so it has still never done the job it was designed for. The channel under it is what is left of the river's old course past the city walls. Two nineteenth-century floods forced the issue: the Danube was straightened and pushed away from the centre, and this arm was kept, deepened and given fixed banks. That is why the great river is nowhere near the old town, and why the water you walk beside is only a piece of it.

Worth knowing

Good to know

Take the steps down at Schwedenplatz and pick a direction — The continuous promenade runs on both banks between Urania and Friedensbrucke, about three kilometres one way, and the character changes every few hundred metres.
Watch for bicycles before you stop to look at a wall — The promenade doubles as one of the city's busiest commuter cycle routes, and the painted stretches are exactly where people stand still without checking.
Walk it out and take the tram back — The interesting stretch is longer than it looks on a map, and the bank has no shade in summer and very little shelter in bad weather.

Things to do

1
Walk one bank down and the other back
Start at the Schwedenplatz steps, follow one side as far as Friedensbrucke, cross and come back on the other. The two banks are painted by different people and look nothing alike, and doing both turns a walk into a comparison. Allow an unhurried hour and a half.
2
Find the blue building from the far side
Stand on the bank opposite Otto Wagner's control house and look at it whole. The cobalt tiles carry a wave pattern that only reads from a distance, and the building sits low against the water as if it were part of the engineering. Which, on paper, it was meant to be.
3
Come back to one wall a month later
Photograph a painted section you like, note where it is, and return on another trip. Almost certainly something else will be there. It is the simplest way to feel how fast this corridor turns over, and it makes the canal the one part of Vienna that is never the same twice.