It's quite interesting and the view from there is ...

It's quite interesting and the view from there is beautiful. Close to the London Bridge.
It's not cheap, but it's worth it.
You can buy your ticket online and skip a queue.
They said the buildings close at 17:30h, but if you want to get in at 17:25h, you won't be able to get in.
The place is enormous, and there's long queues, so get there before 13h if you want to see it properly.
Wear comfy shoes and clothes, there's a lot of walking and in the summer it gets quite hot, specially in the buildings.