Founded in 1871 as the Instituto Vasco da Gama and renamed in 1963 after the Goan freedom fighter Luis de Menezes Braganza, this is one of the city's older cultural institutions — a mix of public library, exhibition space, and reading room, in a neoclassical building between Azad Maidan and the Old Secretariat.
The entrance hall is the architectural highlight: floor-to-ceiling blue-and-white azulejo panels depicting Vasco da Gama's 1497–98 voyage from Lisbon to Calicut. Whether you find this celebratory or uncomfortably colonial is a question worth holding on to. The library upstairs has a serious collection of Portuguese-language material on Goan history. Free entry; open weekdays.