How to reach the Troja Castle in Prague
The easiest way to reach Troja Castle is by bus 112. First, you will need to get to the Nádraží Holešovice metro station on C (red line) line. On the train platform, you will be able to see the sign for the bus 112 with Zoo written underneath. Just follow this sign, since Troja Castle is just across the street from the Prague Zoo. After you get on the bus, the ride takes around 10-15 minutes.
Address: U Trojského zámku 1.