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.
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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? U6R"eQUTV  
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this is the initial list I am working off: bkZ~O=uv$-  
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london D m|_;iO,  
paris )7H  s  
Rome ]B;\?Tim  
Venice -@wnQ?  
Florence ? g7-=kmr|V  
Viena
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Prague c|s*(WljY  
Berlin ? Bx>)i8P7i0  
Zurich @L)=epC  
Madrid ? x9c/;Q&m  
Lisbon ? !E0zj9 [ R  
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too aggressive? $h({x~Oj
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Thanks in advance