Good place to walk and see the old city. But sadly, you are not supposed to swim. You can try the sidewalk.
Bom lugar para caminhar e ver a parte antiga da cidade. Uma pena que não está limpo para nadar.
The Açude Velho in Campina Grande is a artificial lake surrounded by a large sidewalk. There are a couple of museums located along the walk, a few restaurants and bars, some new apartment buildings, and a children's park. On a good day, it is a nice place to spend a couple of hours. The açude itself, however, is rather polluted...