Rockheim is housed in a 1919 grain warehouse in Trondheim. To roughly double the space available, a new sixth floor was added in the form of a cantilevered 'box', which is clad in glass decorated with reproductions of album covers and with changeable back-lighting provided by 13,000 individually controllable LEDs; the public can affect the colours by using cellphones.Terje Mosnes, "Drømmeslott for rockevåkne", Dagbladet, 6 August 2010 .[Pir II], "Warehouse represents Norwegian rock 'n' roll", World Architecture News, 29 November 2012. A "black box" building for performances was also added; the design envisaged this being covered by climbing plants. The architects for the conversion were Eigil Forbord, Kilkk.no, "Rockemuseet venter på deg", Dagbladet, 11 April 2010 . and for the grounds, Agraff AS. The conversion was awarded the City of Trondheim's 2010 building award.Grete Kristin Hennissen, "Rockheim fikk Trondheims byggeskikkpris", Arkitektnytt.no, 30 November 2010 . The building has of floor space, of which half is exhibit space. The building and installations cost 300 million kroner.
