64 pesos (about $3.50 U.S.). An audio guide in English can be rented for 60 pesos; inquire at the information desk. Garden guided tour fee 100 pesos (about $5.40 U.S.).
Museum Tues.-Sun. 10-6:15. Library reading room Mon.-Fri. 9-3. Botanical garden guided tours in English are given Tues., Thurs. and Sat. at 11 a.m. Allow 2 hours minimum.