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. \KmjA)(  
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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? 1Ig@gdmz  
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this is the initial list I am working off: A`4j=OF\  
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london Z;aQ/n[`  
paris 42?X)n>  
Rome =3J&UQL  
Venice I%43rdoPe  
Florence ? c_]$UM[7L  
Viena VrA9}"1x~*  
Prague ^<R*7mB*  
Berlin ? 9Kw4K#IqQ  
Zurich 3 3_YZOy^j  
Madrid ? _W4i?Bde  
Lisbon ? '~3a(1@8  
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too aggressive? ki#O ^vl  
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Thanks in advance