Just thought of visitors to Prague who have more time on their hands. I went to Karlstejn Castle today. It takes 1/2 hour by train (very inexpensive by "OS" and "return"). Train leaves from Smichovske nadrazi 9:25, 10:25, 11:25 etc. Then you have nice walk over the bridge and up the hill through the "vilage" with lots of restaurants and souvenier shops, walk through the woods to the castle. They are closed on Mondays, but it could be nice short day trip. Trains to Prague are leaving Karlstejn also every hour i.e. 12:57, 13:57, 14:57 etc. I have photos from this outing if you want to look.