Droom en Daad foundation funds new collection and renovation of dockside warehouse centred on spectacular new double-helix Tornado

Institution previously associated with a 17th-century Dutch naval officer will become Kunstinstituut Melly in January

Exhibition visitors must drive electric cars through an arena housing major works by artists including Bas Princen, Bruce Nauman and Anselm Kiefer

Vast €85m storage centre will show off thousands of works of art previously hidden from view