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. hJDi7P  
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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? Ys@}3\Mc  
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this is the initial list I am working off: 30XR 82P/  
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london wW#}:59}  
paris *8#i$w11M  
Rome )^4\,
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Venice oN{Z+T :  
Florence ? _C(m<n  
Viena 3T"j)R_=l  
Prague lmfi  
Berlin ? PIH*Rw*GKZ  
Zurich /h*>P:i].  
Madrid ? @r#v [I  
Lisbon ? $4tWI O  
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too aggressive? ;\lW5ZX  
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Thanks in advance