Icons of Vienna – and Londoners’ perceptions of the Austrian city – will be literally turned on their side later this month, when the Vienna Tourist Board builds the biggest structure ever erected in Trafalgar Square, London.

To help Londoners see “Vienna from a different angle”, the tourism body is building a 21 metre high wall for a spectacular vertical show and public challenge over two days.

The dramatic acrobatics show will play on the wall right in front of Nelson’s Column four times daily, at 13:00, 15:30, 17:30 and 19:00, a daring celebration of traditional and modern Viennese culture while suspended in the air.

Mixing art, sound, lights and adventurous aerial displays, the show takes inspiration from Vienna’s modern music scene, Imperial heritage, iconic artist Gustav Kilmt, indulgent food and wine scene, and the Viennese waltz.

In between shows, there is also a chance for the public to take a spine-tingling horizontal stroll down the wall – face first! – defying gravity through specially developed climbing harnesses.

The free event runs from 12:30 to 20:30 on both days, with everyone who attends given the chance to win an all-expenses paid weekend getaway to Vienna.

All the action occurs under the careful guidance of a team of highly-trained safety professionals led by Jochen Schweizer – a record-breaking daredevil who holds the record for the world’s highest bungie jump.

Demonstrating Vienna’s renowned electronic music scene, DJ Tommy Clark – BFF of TOWIE star Lauren Pope and DJ at Katie Price’s hen party – will be DJing in the square throughout.