One of the more interesting spots to take in a grand view of Prague is from here, Letna. The infamous place that was once home to a looming statue of Stalin.
Aside from the weird history of the place, there are some incredible views from here overlooking Prague's Old Town and the Vltava River. Now the place is a bit run down with the eerie sound of the metronome keeping time with skaters whizzing around underneath. Then of course, not far away is the big lazy beer garden that is home to many outdoor tables and a few beer stains.
You can see what Letna used to look like here.