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. d+}kg  
<v$QM;Ff  
I have noticed that a number of you are from Europe, can you please offer some suggestions on how best to plan our trip? what will be interesting for girls around 10 years old? J&6:d   
A1A3~9HuK  
this is the initial list I am working off: wFL3
&*  
H06Bj(Y!  
london 8Rxc&`_X  
paris CLN+I'uX0  
Rome ]W) jmw'mo  
Venice M!{'ED  
Florence ? Hr }k5'  
Viena GDPo`#~  
Prague FFe)e>bH  
Berlin ? SLoo:)  
Zurich \F ifzKA  
Madrid ? |Td5l?  
Lisbon ?
FC}oL"kk  
g-@h>$< 1  
too aggressive? ~HDdO3  
EXpSh}  
Thanks in advance