The garden's first greenhouse was constructed in 1842. See how U.S. currency and stamps are printed. Closed weekends and federal holidays. Call for late December schedules. Closed on federal holidays.
Admission is free.
Closed every Tuesday and on federal holidays. Please enter from the 31 st and R Street entrance. Both are closed on federal holidays. Closed weekends and federal holidays. The public tour leaves every 20 to 30 minutes and lasts approximately one hour.