Palácio Amarelo, Municipal chamber building in Petrópolis, Brazil.

The Palácio Amarelo is a two-storey townhouse on Visconde de Mauá Square in central Petrópolis, painted yellow and now housing the municipal council. Its facade carries two domes above the terraces and ornamental pieces along its length. Inside, the Salão Hermogênio Silva measures 16.60 by 6.60 metres, with carved woodwork by Henrique Levy and ceiling paintings by José Huss.

The plot on the odd side of Rua da Imperatriz was reserved in the mid-19th century for households of the Imperial House. Counselor José Carlos Mayrink da Silva Ferrão built a sobrado there; after his death his widow sold it to Francisco Paulo de Almeida, Baron of Guaraciaba. The Câmara Municipal negotiated for five years and bought it in 1894, adapting it under engineer Harald Bodtker; sessions began on 31 January 1897.

The Salão Hermogênio Silva features rococo decorations crafted by sculptor Henrique Levy, with ceiling paintings by José Huss that give the room its distinctive character. These artistic touches reflect the craftsmanship invested in spaces meant for civic gatherings.

The building sits on Visconde de Mauá Square in the historic center and is easy to reach by foot from nearby areas. Take your time exploring the rooms since the artistic details throughout the interiors are worth observing closely.

The council's 1894 purchase of the mansion from the Baron of Guaraciaba followed five years of failed offers; as a tactic, the council authorised a public market on the square, then voted to build on it, and the baron gave in. The works stalled in September 1894 when the contractor found the house so decayed he proposed demolishing it; the best-preserved parts were kept and joined to the new facade and plenary hall.