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. Y0dEH^I  
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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? BLf>_bUk  
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this is the initial list I am working off: ' 9Xu p  
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london Hc$O{]sq  
paris /cQueUME`  
Rome m6\E$;`  
Venice =M[bnq*\  
Florence ? ND#Yenye  
Viena .K2qXw"S#  
Prague jB Z&Ad@e  
Berlin ? }t=!(GOb}  
Zurich ;LPfXpR  
Madrid ? b;W3j  
Lisbon ? b)5uf'?-  
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too aggressive? t[;LD_  
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Thanks in advance