Can be visited till 5.30pm, ticket around 17 pound...

Can be visited till 5.30pm, ticket around 17 pounds, offers student discount as well.
There are some live performances usually goes on during afternoon, they are great.
If you want to see the crowns and other stuff of kings and queens, must visit Crowns and Jewels section, usually a large line but it is worth visiting, you got to see Koh e Nur as well there.