The Palace of Mafra is a monumental Baroque and Italianized Neoclassical palace-monastery located in the town of Mafra, Portugal. It was built in the early 18th century by King John V and is considered one of the largest palaces in the world. The palace served as a royal residence and was also used as a monastery, as it was built to fulfill a vow made by the king to the Virgin Mary during a difficult time in his life. The palace features a large central library, several chapels, and a magnificent basilica, as well as grand halls and rooms for the royal family. The palace's interiors are decorated with frescoes, tapestries, and intricate carvings. The Palace of Mafra is also known for its stunning gardens, which include fountains, lakes, and sculptures. Today, the Palace of Mafra is a popular tourist destination, attracting visitors from all over the world who come to admire its stunning architecture and rich cultural heritage.