The Portuguese Colonial Architecture in Baucau, Timor-Leste, stands as a testament to the historical European influence on Southeast Asian culture. As the second-largest city in East Timor, Baucau is home to an array of historical buildings dating back to the Portuguese colonial era, which lasted from the 16th century until 1975. These structures showcase a blend of local and European features, detailed in elements such as the distinctly Portuguese azulejos (ceramic tiles), arcs, and terraces. The architecture reflects the fusion of different styles, with tropical adaptations made suitable for the East Timorese climate. After the Indonesian occupation and the eventual independence of Timor-Leste in 2002, these buildings serve both as tourist attractions and as symbols of resilience. Among the prominent sites is the old town, including the Pousada de Baucau, a former Portuguese hotel now housing a restaurant. The conservation of these historic buildings is crucial for retaining the cultural identity and supporting Baucau's economy through tourism.