The Plaza Mayor is a major public space in the heart of Madrid, the capital of Spain. It was once the centre of Old Madrid. It was first built (1580–1619) during the reign of Philip III.
The Prado Museum is the main Spanish national art museum which is located in central Madrid. It is widely considered to house one of the world's finest collections of European art. It is one of the most visited sites in the world and is considered one of the greatest art museums in the world. The collection currently comprises around 8,200 drawings, 7,600 paintings, 4,800 prints, and 1,000 sculptures.
Palacio Real de Madrid is the official residence of the Spanish royal family at the city of Madrid, although now used only for state ceremonies. The palace has 135,000 m2 (1,450,000 sq ft) of floor space and contains 3,418 rooms. It is the largest royal palace in Europe.
Retiro is the most important park in Madrid, and one of the most popular places to visit both for locals and tourists. It's 118 hectares of green space in the very centre of the city.