For more information on admission or visiting, call the Admission Office at 800-922-1599 (in the U.S.) or 301-696-3400, or
email a member of our admission staff below. The office is open Monday through Friday from 8:30 a.m. to 5 p.m. and on select Saturdays.
View our fall travel schedule here.
Phone number: 301-696-3400