"Castelo Branco" can refer to multiple locations and subjects. The most notable is a city in Portugal, located in the central part of the country, known for its historical architecture and beautiful gardens. It serves as the capital of the Castelo Branco District and is a hub for regional culture and commerce. Additionally, "Castelo Branco" may refer to other places, such as a municipality in Brazil or various individuals with the surname. Each of these references highlights the diverse significance of the name in different geographical and cultural contexts, including Castelo Branco District and Castelo Branco, Brazil.