I'm overwhelmed with so many suggestions for Prague.. Anyway, should you (or anyone) decide to visit, give me a shout! Suggestion about Cesky Krumlov isn't bad either - lovely old place, and beautiful country surrounding it also. Depends on your interest.
But, given that you have 5 days and will be in london, why bother with flights - rent a car in the UK, make a small tour around England / Wales - whatever your taste is - you'll find plenty of cities / architecture and landscape.. check in a welcoming pub in the evening and enjoy your time with leisure.
Bookmarks