What if you have already seen the Royal Route - the main sights? Here are some tips about interesting things beyond the beaten track.
Vyšehrad: Ruins of ancient fortress near Metro Vyšehrad, on a rocky mountain, great nature and views. There is also an underground hall displaying the original statues from Charles Bridge (called Gorlice).
Petřín Hill: visit the Strahov Monastery with its baroque library (tram stop Malovanka), walk to Petřín Hill with great views, visit the mini Eiffel Tower, see a mirror-maze, then go down hill and see two nice lakes and even an ancient wooden church.
Boat ride: At Křižovnické náměstí, right at the Charles Bridge, you can get on a boat which will take you through “Prague Venice” and more.
Great Parks: Wallenstein Gardens (near Metro Malostranská), Havlíčkovy Sady (beautiful artificial caves, near Tram Jana Masaryka), Letná Park (old Merry-go-round with horses, on a hill with great views)
Old tram: at Točna Dlabačov (tram stop Malovanka, near Prague Castle) there is a bar made from an old tram (open 4 p.m.-10 p.m., weekends 11 a.m.-10 p.m.). It is also the starting point of the historical tram 42 (1930s style) that you can ride through the whole city for cca 18 Euro.
Museums: Wax Figures, Optical Illusions, Medieval Torture, Kafka, Mucha, National Museum and others
River Islands: Relax in the parks on the two leisure islands near National Theatre (Střelecký Island, Slovanský Island)
Bridge: Metro Můstek means “Bridge” in Czech because in Middle Ages there used to be fortification with a water moat and a bridge. The bridge was excavated and can be seen in the underground of Metro Můstek. You must enter Metro Můstek (green line A) at the lower end of Wenceslas Square.
Modern statues by David Černý: upside down horse (in Lucerna Passage, near Wenceslas Square), Kafka Head (near Metro Národní třída) and many others.
Pater Noster: A hop-on hop-off elevator in the Novak House in Vodičkova Street next to Wenceslas Square. Another one is in YMCA in the Na Poříčí Street
Narrowest street in Prague with traffic lights for pedestrians (next to U Lužického semináře Street, near Charles Bridge).
Náplavka: Walk along the waterfront with parked ships that serve as restaurants and cafés (near Metro Palackého náměstí)
Bus trips outside the city: Kutná hora (medieval mining town), Terezín (nazi concentration camp), Karlovy vary (Carlsbad spa), Český Krumlov (medieval town), Českosaské Švýcarsko (Rocks),
Golf: courses where you can play without a license: Vinoř, Yard Předboj, Hostivař (only short holes, but within reach of public transport)