As I said in a previous post trams are my preferred form of public transport in Prague. The metro is very limited and doesn't have the advantage of taking you past the city's sights. You can also get a much better idea of the layout of the city from a tram seat. There are a lot of tramlines, but there are four that are particularly useful for visitors to Prague. These are:
Number 9 - runs along the castle side of the river from Anděl until it crosses the river at Újezd, going past the National Theatre and Národní třída, across Wenceslas Square, and on to the Main Train station and beyond, thus offering a direct route between the Na Knicezi bus station at Andel (and the buses from Cesky Krumlov) to the Train Station
Number 17 - runs from Vyšehrad, along the eastern bank past Charles Bridge, and through the Old Town before crossing the river
Number 22 - runs through the hotel area around Náměstí Míru, past the National Theatre and then over the river and up to Malostranské náměstí; then it winds its way up to the castle and on to Bílá Hora; it is the best way to get to the castle without climbing
Number 23- runs past Karlovo náměstí, over Wenceslas Square, stopping at Náměstí Republiky for the Old Town and the Obecní dům, over the river past the steps up to Letna Park and into Holešovice, stopping outside the Veletržní palác and its modern art gallery, and on to the Exhibition Areas and Stromovka Park.
Brand new trams are being introduced on some lines. But if you want to get a feel for the past why not try the Number 91 tram. This vintage tram runs around central Prague from April to mid-November on Saturdays and Sundays. The trams start at the Public Transport Museum at Vozovna Střešovice, then runs past Pražský hrad, Malostranská, Malostranské náměsti, the National Theatre, Národní třída, Wenceslas Square, Náměstí republiky, Veletržní, terminating at the Exhibition Halls (Výstaviště Holešovice) and back again. Prague has had trams since 1875, when they were horse-drawn. Take a trip on the 91 to the Museum to find out more.