In what appears to be a word first, developers in London are planning a swimming pool suspended high between two buildings with a clear shell that enables swimmers to feel like they’re in the sky.

The 25-meter-long pool would connect two apartment complexes that are part of the 2,000-home Embassy Gardens development in London’s new Nine Elms quarter, reports Dezeen.

It’s the work of architecture firm Arup Associates with help from structural design engineers at Eckersley O’Callaghan and also from Reynolds, an aquarium design firm.

It has reached the second stage of construction and developers from the Ballymore Group say it will include a bar, spa and orangery.