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. |jb,sd[=S  
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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? Q-Oj%w
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this is the initial list I am working off: hkx(r5o  
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london L u1pxL  
paris 2*a5pFkb  
Rome Fil6;R  
Venice nhRpb9f`1@  
Florence ? Kiq
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Viena .,\^{.E  
Prague xc,Wm/[  
Berlin ? SE6c3  
Zurich 7KN+ @6!x  
Madrid ? Xo3@-D_c!c  
Lisbon ? &/(JIWc1su  
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too aggressive? 3,1HD_  
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Thanks in advance