So its finally happening. For years the powers that be in Rio and Rio carnival have been planning to demolish the old Brama beer factory to make room for the redevelopment of the sambodromo. On June 5th, in a controlled explosion, the Brama factory was no more. They had already pulled down the old setor 2 private boxes. And if all goes to plan there will be a new and seriously enlarged sambodromo ready for Carnaval 2012.
Here's a video of the spectacular explosion.
A complicated question, on some levels.