Christo’s ‘Big Air Package’ is both the largest ever inflated frameless envelope and the “most expansive indoor sculpture” ever created. For his first major public work since the death of his partner Jeanne-Claude in 2009, the 90 meter high inflatable boasts a volume of 177,000 cubic meters and uses 20,350 square meters of semitransparent polyester fabric, as well as 4,500 meters of rope. Despite lacking a skeleton, the 5 ton form fills the interior of a former gas tank.

Christo’s ‘Big Air Package’ is located at Gasometer in Oberhausen

, and will be open to the public through December 30th.