The Singing Fountain was built in 1986 and to this day remains an inspiration for others of its kind. It synchronizes with its own music and with music coming from nearby state theatre and carrilion too. It's a great show during evening hours as well, the fountain lights up when it gets dark.
It doesn't function during winter.
Wikipedia https://hu.wikipedia.org/wiki/Zenélő_szökőkút_(Kassa)
Address 97/53 Hlavná, Košice 04001, Slovakia
Coordinates 48°43'16.238" N 21°15'27.422" E