Designed by Francesco Sabatini and completed in 1778, the Puerta de Alcala is one of Madrid's most recognizable monuments. Carlos III commissioned the gate to replace an older entrance along the road from Aragon, wanting something grand enough to announce arrival in the capital. The result is a neoclassical granite structure with five arches, ten columns, and sculptural decoration by Roberto Michel and Francisco Gutierrez.
The gate stands on the western edge of Plaza de la Independencia, where the Retiro Park meets the Salamanca district. It looks particularly striking at night when floodlit. The surrounding roundabout is a natural landmark for orienting yourself in central Madrid -- the Retiro entrance is steps away, and the Cibeles fountain is a short walk down Calle de Alcala.