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. "\[>@_p h  
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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? !~l%6Z5  
DS2$w9!  
this is the initial list I am working off: E}=,"i  
UIj/Id  
london @#tSx  
paris gAY2|/,  
Rome NLGr=*dq  
Venice {@$3bQ  
Florence ? n_Y]iAoc`  
Viena yMkd|1  
Prague j[`?`RyU  
Berlin ? U
G_ 0Y8$  
Zurich ~&:R\  
Madrid ? P[K=']c  
Lisbon ? Z :+#3.4$3  
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v*k  
too aggressive? %4Zy1{yKs_  
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Thanks in advance