What is the clubbing age in Europe?

My boyfriend and I are going on a trip to Europe this summer, he is 17 and I am 16, we are going to Paris, Dublin, Prague, London, Rome, Venice, Amsterdam, and Brussels and were wanting to go clubbing one night when we aren't with our families. Would we be allowed to get into any clubs in any of these cities without our parents or without being carded? are they strict on the age limits there or could we sneak in? If you could give me names of actual clubs too that would be great! and we want to go the real clubs too not jazz ones or anything lame :)