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. AUvUk<a  
.q^+llM  
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? S;]][h=  
Pn[R.u(l  
this is the initial list I am working off: QCvz|)  
'qT[,iQ  
london F7~T=X)1
 
paris JVgV,4 1  
Rome 1:r
8p6  
Venice @z!|HLD+  
Florence ? y.'5*08S0  
Viena kX)Xo`^Ys  
Prague x^ruPiH  
Berlin ? W8R"X~!V  
Zurich .W)%*~ O!;  
Madrid ? #.kDin~!  
Lisbon ? ic_q<Y}  
Nn%[J+
F  
too aggressive? u=u#6%  
Y^~Dr|5%  
Thanks in advance