Wonderful place for walk. Plus there is a beautiful view (big part of Prague inckluding the whole…read morehistorical centre) and interesting museum about history of the monument which used to be the tribute to soldiers killed in the 1st WW and later mausoleum of the first (and unfortunately not the last) communist president Klement Gottwald. Also there are plenty of good cafes and restaurants around. And also there is a tunnel (pedestrians and bikes) going under the hill through which you get pretty fast from Žižkov to Karlín.