Splash pads in Wilmington, Delaware

Rockwood Park wraps a free spray ground around the lawns of an honest-to-goodness Victorian mansion museum, and the combo is genuinely magical. Kids splash, then you tour the gardens and the house if you've got energy left. Parking and entry are free; the spray ground itself runs seasonally with no admission. Restrooms and picnic groves are scattered across the 72 acres, so you can easily stretch this into a half-day. Best on weekday mornings — weekends bring birthday parties to the pavilions. Wilmington summers are humid and thunderstorm-prone; the spray often shuts down for an hour after lightning. New Castle County's most underrated free family afternoon.