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. gzdR|IBa  
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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? Buazm3q8H  
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this is the initial list I am working off: +"8AmN4  
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london rmVF88/;  
paris jpg$5jZ  
Rome liu%K9-r  
Venice w,uyN  
Florence ? jvGGIb"&1  
Viena YXeL7W  
Prague rDr3)*H?0  
Berlin ? %p?+r  
Zurich M3>c?,O)J  
Madrid ? eRV4XB:  
Lisbon ? K7o!,['W  
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too aggressive? 0A
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Thanks in advance