Starting May you can take a boat trip to Prague Zoo not only from Rašínovo Quay but also from Nemocnice Na Františku. The boats sail at 9:00, 10:00, 11:00, 15:00 a v 17:00 till the end of May each weekend and from June then every day.
Prices: 100 CZK full fare, 60 CZK child fare
By the way Nemocnice na Františku is the oldest hospital in Prague, the place where it stands has served for medical purposes since 14th century.