The Vegas High Roller observation wheel

The Vegas High Roller is the latest and most progressive of the modern giant observation wheel concepts fi rst developed by Marks Barfi eld Architects with Arup for the London Eye in the late 1990s. Unlike other cable-tensioned wheels, the structural design of the rim has been reduced to a single tubular chord carrying 28 actively stabilised, large spherical cabins (each accommodating up to 40 passengers). The benefi t of improved structural stability is exploited by using a 35m long hub-and-spindle assembly connecting the cable spokes to the rim. The result is an elegant and distinctive structural solution. It is also the fi rst giant observation wheel to operate in a desert environment. This article describes the project’s development and some of the challenges that this unique structure created. The project won the Institution’s 2015 Structural Award for Arts and Entertainment Structures.