Hart Park is a 19.5-acre park on the Menomonee River in Wauwatosa, Wisconsin. Created in 1921 and originally known as City Park, the park has a football/soccer field, baseball diamond, field house, several tennis courts, a skate park, and nature trails. In 1960, to commemorate Wauwatosa's 125th anniversary, the common council named the par…Hart Park is a 19.5-acre park on the Menomonee River in Wauwatosa, Wisconsin. Created in 1921 and originally known as City Park, the park has a football/soccer field, baseball diamond, field house, several tennis courts, a skate park, and nature trails. In 1960, to commemorate Wauwatosa's 125th anniversary, the common council named the park Charles Hart Park to recognize the city's founder.