Parco Adriano
Rome, Italy
Parco Adriano is a park in Rome, Italy on the northern bank of the Tiber, just to the east of the Vatican. It contains the Castel Sant'Angelo. It is a good place for families to go to, because it has a playground for children, who can "let off steam" after visiting churches and museums. Picnics are allowed.
Park data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).