Puerta de Alcalá is a monumental gate located in the heart of Madrid, Spain. It was built in 1778 by the architect Francisco Sabatini under the commission of King Carlos III, who wanted a new entrance to the city that would represent the glory and power of the Spanish monarchy. The gate stands at the Plaza de la Independencia, at the intersection of two of the most important streets in the city, the Calle de Alcalá and the Paseo de Recoletos.

The Puerta de Alcalá is a triumphal arch with a neoclassical design inspired by the Roman Arch of Titus. It is made of granite from the nearby town of Colmenar Viejo and has five arches, three of which are passable for vehicles and two are pedestrian. The central arch is larger and more ornate than the others, with decorative reliefs and sculptures. At the top of the gate, there is a statue of a chariot with six horses driven by the goddess of the dawn, Aurora, created by the sculptor Francisco Gutiérrez.

The Puerta de Alcalá has witnessed many important events in the history of Madrid, such as the arrival of Napoleon's troops in 1808 or the proclamation of the Second Spanish Republic in 1931. Today, it is one of the most popular tourist attractions in the city and is frequently used as a backdrop for cultural events and celebrations.