Cines Nilo y Mayo, Movie theater in Santiago, Chile

Cines Nilo y Mayo was a cinema complex with two underground screening rooms, where the Nilo theater occupied the first level and the Mayo theater sat on the second level. The facility held approximately 1000 seats combined and maintained this layout throughout its operational years.

The two cinemas were designed in 1953 by Sergio Larraín García-Moreno, Emilio Duhart, Jaime Sanfuentes and Osvaldo Larraín and built between 1954 and 1955 beneath the Portal Plaza de Armas gallery. They opened on 30 May 1958 with a Soviet film festival, under owner E. Selman y Cía. Ltda., and from 1960 were leased by Socine Ltda. They closed on 7 June 2019 and were destroyed by a fire on 10 July 2025.

The entrance displayed a mural titled 'Terremoto' by artist Nemesio Antúnez that became a protected National Monument. This artwork reflected how artists engaged with the natural forces that have shaped Santiago's history.

The two cinemas were destroyed by a fire on 10 July 2025 that took almost a day to bring under control, so the underground halls can no longer be visited. The Nilo occupied the first basement and the Mayo the second, beneath the Portal Plaza de Armas shopping gallery. The Nemesio Antúnez mural 'Terremoto' was in the access hall.

The cinemas were demolished by a fire on 10 July 2025 that took almost a day to bring under control. Before that, in November 2024, buyers planned to turn the halls into warehouses, but a Cineteca Nacional team first rescued the original projectors, the rooftop signs bearing the cinemas' names, and the poster racks.