Remember when it snowed?

Fortress of solitude: Aidan O’Connor, 9, and his sister Beatrice, 7, of Windsor Terrace built a snow fort after the storm.

Wild ride: Rory Grant, 5, of Prospect Lefferts Gardens zips down a hill in Prospect Park on a homemade sled.

Backseat driver: Park Sloper Dylan Pappas hitched a ride with his son, Neko, 2.

Sled time: Prospect Park was packed with sled-toting families.

Ski school: Sebastian Holst, 3, of Prospect Heights tried skiing for the first time.

Duck and cover: Sam Philo, 9, of Park Slope launches a snowball in Prospect Park.

It’s a race: Kids tested their sleds on the park’s slopes.

Fun for big kids: Grown-ups, such as Kevin McGrath, had a more extreme approach to sledding, racing down stone stairs near Quaker Hill in Prospect Park.

Snow day: Brooklynites love snow.