Located in Lisbon, the capital of Portugal, it is a monument of significant historical and cultural significance. Originally served as the Church of Saint Gracia. Built in 1682, it was officially named the National Ancestral Hall in 1916. It is an outstanding representative of the Portuguese Baroque style, and its magnificent dome was not completed until 1966, making it one of the longest lasting architectural projects. The interior houses the most outstanding figures in Portuguese history, including renowned writers, politicians, military leaders, and serves as an important place to commemorate these national heroes. In addition to its historical and cultural value, it is also a landmark building visible in many tourist attractions within Lisbon city