Sandy beach in the middle of Brno?

The other day I walked through the náměstí Svobody (Liberty square) with my hubby, and guess what I found there??  A sandy beach with bright red umbrellas!  Wait... as you know, there are no oceans anywhere near Brno. It was a temporarily set up beach which was being very much enjoyed by the local Brno folks. Although it was well past 6 o'clock, the sun was still hot, and people were wearing shorts, lying on beach chairs, sipping tropical drinks, and just enjoying the essence of summer (without the sound of the ocean of course ^^). 

It was rather a bizarre scene, but I love the "fun" spirit of people just enjoying the summer. There was a great jazz band playing that evening there, too.