The Palácio Nacional de Mafra is one of Portugal's most iconic and historic landmarks. Located in the town of Mafra, this grand palace was built in the 18th century and is a testament to the country
From Wikipedia
The Palace of Mafra, also known as the Palace-Convent of Mafra and the Royal Building of Mafra, is a monumental Baroque and Neoclassical palace-monastery located in Mafra, Portugal, some 28 kilometres from Lisbon. Construction began in 1717 under King John V of Portugal and was completed in 1755.