Experience the romance of the rails on the Prague Semmering. This historical railbus departs from the main railway station on Saturdays, Sundays and public holidays. First it’ll take you through the Vinohrady tunnel, then across the Vltava River with views of Vyšehrad and Prague Castle, then the impressive Hlubočepy viaducts and the Košíře-Motol natural park to Zličín train station and back again.
Source: https://www.prague.eu/en/object/places/2092/prague-motor-coach-train