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. ,3N>`]Km'  
n'0r (  
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? \&b 9  
CK1A$$gnz  
this is the initial list I am working off: @JGFG+J}  
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london )/)[}wN;j  
paris |Z)}-'QUJ  
Rome Em !%3C1 r  
Venice
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Florence ? @dx8{oQ  
Viena `][vaLd`Q  
Prague m'Q G{f  
Berlin ? ;wkMa;%`g|  
Zurich .+kg1=s  
Madrid ? &>&6OV]P'  
Lisbon ? ) J.xQ}g  
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too aggressive? *V4%&&{  
VXW*LEk  
Thanks in advance