With these pictures, I attempt to take the water in a fountain the scale by using macro technique. Additionally, through different exposure speed the structure of the photographed water was changing at the same time, which made me think of the early phases of the expanding universe.
By pure coincidence, there is a help for the scale, because a little blue tit passed by the fountain. The exposure was too long to get an unblurred image of the bird. With the size of the bird in mind, you can estimate the size of the fountain.