Ever wonder what goes on after the doors of the National Mall’s museums close for the night? The National Museum of Natural History is giving 8- to 12-year-olds the chance to find out with six Friday sleepover dates beginning in May. Children will get to explore the museum’s halls, watch an IMAX film and sleep under Phoenix the whale in Ocean Hall. To register, go to http://smithsoniansleepovers.org/index.htm. — Courtney Zott
