The BL-64 anti-aircraft guided missile system remained operational until the end of 1999, at which time it was decommissioned.
The BL-64 fire unit that still exists today on Gubel (Switzerland, Canton Schwyz) was declared a historical monument in the summer of 2000. This is an open-air museum and it is the world’s only completely preserved weapon system of this type.
Link: BLOODHOUND FLIEGERABWEHR LENKWAFFENSTELLUNG BL 64 ZG (bloodhound-museum.ch)
Link: Verein BL-64.ch Schweiz