There's a documentary about that in Netflix.

The title in English is a bit misleading, as it makes it sound that there's one building of the Central Bank of Brazil but in fact it has many branches in many cities; that one was in Fortaleza. It's kind of like the US Federal Reserve.

By the way the original title is "3 Tonelada$" ("3 Tonne$"), in reference to how much the money weighted.