“We’re all children at heart,” laughs Carla Precht, founding director of the Bronx Children’s Museum. “The building was close to the water, and it looked like a castle—I thought it had all the makings of a wonderful space for kids,” she adds. After 10 years of operating out of a purple school bus as a “museum without walls,” in December the institution moved into a long-awaited brick-and-mortar home and opened its doors to the public. Now it doesn’t just have wheels—it has walls.