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. )XzI #iQ  
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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? C@L$~iG  
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this is the initial list I am working off: (KF=On;=Y  
c;n *AK  
london W^]3XJP  
paris ;o0&`b?  
Rome viMzR(JU  
Venice 8@2OJ=`[  
Florence ? I$0)Px%z  
Viena "huFA| `  
Prague kAC&S!n  
Berlin ?  oze&  
Zurich 4
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Madrid ? @>)r} b  
Lisbon ? @vrV*!  
kMt 8/E`  
too aggressive? 8W#heW\-]  
NwG= <U*  
Thanks in advance