National museums and sites in Italy are free for EU citizens under 18 and over 65, while there's a discount for students 18-25.

If I remember well, non EU citizens have a children and senior discount, but I'm not sure it's as high as 50%.

Please also note private attractions have limited discounts for children and seniors, while some top exhibitions or events have no discount at all. Some towns, like Trieste, offer tourist vouchers with discounts to visitors staying overnight.

Bye, Paolo Trieste, Italy