The architect Fedde Reeskamp, from the ‘Architectenkamer’ in Haarlem haddesigned a mosque for the client ‘Islamitische Stichting Nederland Selimiye’ inHaarlem. The design consists of a blockwork mosque with a dome on top, visuallyapparent in silhouette of the mosque. He came with this enquiry for a dome toOctatube. The contrast between the solid building block-shape and the dome on topled to the suggestion to have the dome made in glass, out of its extreme contrast.Octatube designed a self-supporting dome of solely insulated glass panels, withoutany frame or structure. Thanks to a hidden tensile system with corner joints, thecomplete dome is a reliable structure of glass and tensile spokes