What: “Play Work Build”
Where: National Building Museum, 401 F Street NW.
When: Monday-Saturday, 10 a.m. to 5 p.m.; Sunday, 11 a.m. to 5 p.m. Closed on Christmas. The exhibition will be open for at least two years.
How much: $5 ages 3 to 17; $8 adults; free for age 2 and younger. Prices include admission to all museum exhibitions.
Information: Call 202-272-2448 or have your parents visit www.nbm.org.