Did not live up to expectations
Very nice old city, but not much to do if you're not there to shop or party. Charles Bridge - good history, but in the end, a bridge where people sell stuff, mostly drawings. Prague Castle - looks great on the skyline and affords a great view, but you can't go inside the buildings, just through the courtyards. The Astronomical Clock - kind of neat, but only plays for 20 seconds. It was built in the 1400s however, so amazing for the time.
Insider Tip:Did walking tours of the city and the castle. Worth the time!