I've said in another area that I consider the 'Think Tank' a complete ripoff. The loss of so much of historic B'ham to create the site, and the huge waste of space inside are a terrible indictment on those who allowed it to happen. As a child I often went to the Science Museum, it was an incredible experience. Much of what was there went to the 'TT' but a lot was lost. Many exhibits in the 'TT' are crammed in without proper information plaques, others are really well presented. I've been to the 3D Cinema, and the Planetarium was awe inspiring, but I felt the site was soul-less. I too agree that the Charges are a Council Avarice based thing, the Coventry Transport Museum is free.....
That's my view, it's good in parts, but very poorly designed.