The Palácio dos Leões is the official residence and seat of the Governor of Maranhão, occupying a prime position at the edge of the old city overlooking the bay. The building's exterior, with its symmetrical facade and the stone lions that give it its name, is one of the most recognizable images of São Luís.
The palace is open to the public on certain days and the interior — decorated with azulejo panels, French furniture, and portraits of colonial governors — is worth seeing. The terrace at the back overlooks the bay and the waterfront of the old town, and on a clear morning the view is superb. Check opening hours at the tourist information centre in Praia Grande before visiting.