Brazzaville's Palais du Peuple is a formal government building rather than a visitor attraction, but it is still worth noting as part of the capital's colonial and political landscape. The white palace sits in guarded grounds and is used for high-level state business, so access is normally restricted.
Treat it as a look-from-outside stop. The best impression is often from a passing taxi or from river approaches, where the building reads as part of the official cityscape facing the Congo. Do not linger with a camera at the gates unless a local guide confirms it is acceptable.