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. *U^6u/iH  
+Jlay1U&  
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? 6o!!=}'E[  
(iBNZ7sJ  
this is the initial list I am working off: {}>0e:51  
BHIRHmM<Y  
london 68NYIyTW9  
paris %oF
}HF.  
Rome ~d o9;8v  
Venice 9/{(%XwX  
Florence ? _ q(ko/T  
Viena spGb!Y`mR  
Prague "LHcB]^<  
Berlin ? 9`T)@Uj2n  
Zurich 4~ q5,^kgB  
Madrid ? ~xbe~$$Q@  
Lisbon ? )YYf1o[+  
Gk. ruQW"  
too aggressive? tnV/xk#!  
g%ndvdb m  
Thanks in advance