Help needed! what to see in Europe with kids

I am taking my two daughters to see Europe first time this summer, most likely flying into London and hop on Eurail. two weeks is about what I can afford. CIA KXYM  
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I have noticed that a number of you are from Europe, can you please offer some suggestions on how best to plan our trip? what will be interesting for girls around 10 years old? X)S4vqf}  
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this is the initial list I am working off: TmEh$M  
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london tD> qHR  
paris `Db%:l^e  
Rome D:PrFa  
Venice U,Th-
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Florence ? [9\Mf4lh#  
Viena 1HUe8m[#3  
Prague C5=m~  
Berlin ? W/ u_<\  
Zurich L\\'n )  
Madrid ? ;TboS-Y  
Lisbon ? r=<1*u  
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too aggressive? oWBjPsQ  
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Thanks in advance