Here is a photo taken during Carnavale at Luna Park in 1946, Buenos Aires. Francisco Canaro and his orchestra are on stage. Luna Park has a maximum capacity is 9,000.

These two photos were taken during a dance in 1939…

Here is a closer view of the fountain in the center of the dance floor. To counteract the smell of all those hot, sweaty dancers, the fountain was often laced with perfumes to diffuse through the hall by evaporative action.