At a time when things are getting faster, Heike Mutter and Urlich Genthe's walkable roller coaster is a welcome relief, a leisurely delight, and a playful Escher-esque anomaly.

While it symbolises all sorts of artistic intents, it's also just charmingly pointless and lovely to look at. Especially at night, when its LED lights create a persistent image effect, like an enormous sparkler is being waved rapidly through the air.

The 220-meter serpentine, steel creation sits in a defunct industrial estate in Dahlsburg, Germany and overlooks the Rhine. It's got to be one of the most peaceful roller coasters ever.

Images: Thomas Mayer