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. trID#DT~  
wJ;9),fL  
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? VZUZngw  
=g{_^^n  
this is the initial list I am working off: DR.3 J`?K  
nEjo,   
london Z\ "Kd  
paris dbf^A1HI  
Rome f]@[4<Ny  
Venice @t{{Q1  
Florence ? 6Y0/i,d*  
Viena aRFi0h \  
Prague 9+WY@du+  
Berlin ? 8cYuzt]..  
Zurich 34&u]4=L)  
Madrid ? gJWlWVeq$  
Lisbon ? r< d?  
mafAC73  
too aggressive? (H|%?F;{l  
BDv|~NHs  
Thanks in advance