Located at the urban heart of Madrid, this cultural landscape evolved since the creation of the tree-lined Paseo del Prado avenue, a prototype of the Hispanic alameda, in the 16th century. The avenue features major fountains, notably the Fuente de Apolo and the Fuente de Neptuno, and the Fuente de Cibeles, an iconic symbol of the city, surrounded by prestigious buildings. The site embodies a new idea of urban space and development from the enlightened absolutist period of the 18th century. Buildings dedicated to the arts and sciences join others in the site that are devoted to industry, healthcare and research. Collectively, they illustrate the aspiration for a utopian society during the height of the Spanish Empire, linked to the enlightened idea of democratization of knowledge, and exercised major influence in Latin America. The 120-hectare Jardines del Buen Retiro (Garden of Pleasant Retreat), a remnant of the 17th-century Buen Retiro Palace, constitutes the largest part of the property. The site also houses the terraced Royal Botanical Garden and the largely residential neighbourhood of Barrio JeroĢnimos with its rich variety of 19th- and 20th-century buildings that include cultural and scientific venues.