probably the local cafe, at uni, church, the beach, the shops, a well known park maybe? but see, i dont 'go' anywhere specifically to meet single people. if an opportunity comes up awesome, but it rarely ever does so *shrugs*
Everywhere, just in everyday life, my aunt and uncle met in high school, my cousin and his wife at a book/video store, my father and mother on the street. Any were and everywhere you meet potential mates in the strangest of places.