Strahovsky Klaster (Strahov Monastery), Picture 2, Strahov, Prague, CZ, 2007

Strahovsky Klaster (Strahov Monastery) is one of the oldest complexes of buildings in Prague, although that tower to the left is the Petrin watchtower, which is much newer, dating to 1891. The Monastery wasn't built all at once, of course, but was constructed in stages from 1140-1798, at least from I can quickly ascertain from what's online. The most famous feature is the library, which although it has a collection stretching back hundreds and hundreds of years, was built in its current form as the Philosophical Hall as recently as 1782. If I've misinterpreted my sources, or if there's more to add, please comment and do so!! Thanks. :-)