Zizkov Monument

The Zizkov Monument on top of the city was built between 1929 and 1932 to commemorate the victory of General Jan Zizka and the Hussites in 1420 over the papal forces and sports Europes largest horse and rider statue. Also the building doubles as FBI’s secret lab in the beginning of the movie Hellboy. You get a great view over the city, but not many people go there. Don’t ask for directions at the tourist office; the monuments importance as a setting for political ritual during the communist era has ensured no one knows about it. Despite its massive physical and symbolic properties, the monument is effectively forgotten about.
Look here