In honor of the London Design Festival 2013, de Rijke Marsh Morgan Architects (dRMM) and engineering firm Arup have designed and installed Endless Stair, a life-size take on the MC Escher masterpiece, between St. Paul's Cathedral and the Millennium Bridge leading to the Thames.

The tulipwood structure, featuring 24 flights of interlocking staircases will be available for the public to climb to get an elevated view of the surrounding area, and, after dusk, the staircase will be illuminated with custom-built lighting.

The London Design Festival runs September 14-22, 2013.