The document summarizes four landmarks in Madrid, Spain: Plaza Cibeles, Gran Vía, El Retiro park, and Puerta de Alcalá gate. Plaza Cibeles is a busy intersection with a monument built in 1782. Gran Vía is one of Madrid's most important shopping areas with theaters and hotels. El Retiro park is a large, popular urban park near museums. Puerta de Alcalá is a neoclassical monument and former entrance to a path between Madrid and nearby Alcalá de Henares.