In 1891, the citizens of Prague were able to use their first electric tram track going from Letná to Stromovka, where the World Exhibition took place. The most notable exhibit at the Exposition was then an electrically lit fountain, constructed by the "Czech Edison" František Křižík. The present make-up of the fountain has as its basis the reconstructed li3S Hp fountain design, which saw the light a hundred years later - in 1991 at the Všeobecná československá výstava (General Country Jubilee Exhibition). In the 19th century, the bottom of the fountain plate was equipped with fifty multicolored reflectors; today, the fountain has 1300 of them ...