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. piH0_7qr  
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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? |d z2Drc  
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this is the initial list I am working off: BzzZ.AH~  
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london ]=%6n@z'  
paris Fw*O ciC  
Rome $Mj\ 3  
Venice |V4<eF-0
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Florence ? w[D]\>QHa  
Viena p!~1~q
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Prague D)pTE?@W'  
Berlin ? ).IyjHY  
Zurich ~#4FL< W  
Madrid ? 2NJ\`1HZ\  
Lisbon ? Mo<q(_ZeRP  
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too aggressive?
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Thanks in advance