Complex sentence: In the center of the playground, there used to be a pozo, source or lake, and the vegetal elements complemented with decorative details like mosaics, vases or statues, and often the walls were decorated with paintings to the fresco of subject paisajista.
Split into simpler sentences: In the center of the playground, there was a pozo, lake, decorated with mosaics, vases or statues. Even the walls were decorated with paintings to the fresco of subject paisajista.