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. |h7v}Y  
~JXHB
X  
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@8[ql1l  
Y!L jy [/  
this is the initial list I am working off: qkIU>b,B  
=%3nKSg  
london VC.?]'OqD  
paris @ 2mP  
Rome X=3@M_Jzo  
Venice -:,h8JyMP  
Florence ? g|P hNo  
Viena cC4T3]4l '  
Prague I?>#neHc6  
Berlin ? CytpL`&^]  
Zurich e-VLU;  
Madrid ? B4}XK=)  
Lisbon ? -db+Y:xUZ  
9<#D0hh$  
too aggressive? c&++[  
l
K4+8VZ  
Thanks in advance