[7] The building structure is of curved wrought iron and glass supported by cast-iron beams resting on ornate columns, surmounted on masonry foundations.Benjamin Disraeli and William Ewart Gladstone were both installed as rectors of the University of Glasgow in the palace, in 1873 and 1879 respectively – its last use as a public events venue, before becoming wholly used for the cultivation of temperate plants.£3.4m of the cost came from the National Lottery Heritage Fund[8] and other grants support including from Glasgow City Council and Historic Environment Scotland.The restoration involved the careful dismantling of the palace, and the removal of the parts to Shepley Engineers in Shafton, South Yorkshire for specialised repair and conservation.[9] To enable this the plant collection was removed completely for the first time ever, and the ironwork was re-assembled over a re-arranged internal floor layout, giving the palace a prolonged life.