It was opened at a big ceremony in 1894.Hydraulic system raises and lowers the two flexible elements when ships pass under it.I had the opportunity to be on the bridge when it was closed for transport in order to let a ship pass.It was extraordinary to watch the huge gates geting up and after that back to normal.More then 300000 tourists visit the uper level(entrance fee )which houses exibitions .You can walk between the two towers on the walkway which connects them.
The view is of course wondeful and unique.

Impressive bridge. Besides the Big Ben this is one of the most known/famous buildings of London. That's why it's definitely worth a visit (you don't have to go in it, you just have to see it!)