The best place in Prague.  Try to avoid during the busier times to get the most out of it.  Everytime you walk past this place you will stop and stare at the beauty, and maybe understand why the designer had his eyes taken out.  The best way to get an understanding of this place is not the tour guides, but the locals.  If you get the chance, spend a night with some Praguers and get them to tell you about this place; it means so much to them.