a lost balloon, filled with helium, floats stranded at the top of a glass ceiling of a train station located in a large european

architecture balloon birthday blue building business ceiling city commercialbuilding contemporary daylighting daytime electricblue floating geometric giant glasgow glass greenhouse grille hangar helium industrial inflatable inflated items large line lost nopeople noperson object pattern perspective picturewindow reflection roof scotland sitting sky skylight technology tintsandshades train trainstation unitedkingdom upset urban urbansetting window