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. Mou>|U1e"  
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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? U`ey7   
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this is the initial list I am working off: rOm )s

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LUna stA^  
london |F-_Y R  
paris b&"=W9(V  
Rome Bbz#$M!:  
Venice n9<QSX&~<  
Florence ? Y 6
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Viena lfOF]Kiqr  
Prague P+:FiVj@~  
Berlin ? 1?]Gl+}  
Zurich  4>uz'j<  
Madrid ? kn
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Lisbon ? Jt43+]  
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too aggressive? [(BA:x1  
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Thanks in advance