Sky Pool, a suspended swimming pool planned for the new Nine Elms on the South Bank neighborhood in London, will link two residential buildings 10 stories up. Residents can swim from one building to the other.

The pool will link Embassy Gardens.

Ballymore Group is the developer for the project working with architects Arup Associates and U.S.-based polymer technologists Reynolds Polymer Technology Inc.

The project poses some engineering challenges. The bridge, according to Ballymore, has a clear span of 14 meters. The side walls form beams capable of spanning the distance while carrying the weight of water, as well as the pressure on the sides and wind loads. The movements of the buildings themselves also pose challenge due to wind sway, foundation settlement, and other factors.

“The new structure must deal with these, and so it cannot be rigidly connected at both ends; it must be allowed to slide at the same time as maintaining watertightness,” says Ballymore.

A bonded acrylic structure will be used to provide less-intrusive joints and connections, as well as greater transparency. Additionally, the material will produce less distortion when viewed from inside the water or from outside.