doors with the tower functioning as an office building and convention center. Floors 40 and 41 housed TV studios for Corporación de Noticias e Información, which operated XHTVM Canal 40. On May 19, 2005, these floors were evacuated after the beginning of a strike at CNI. The facilities have remained untouched since, due to the legal cases that have followed CNI since 2005. The WTC also houses the transmission facilities for XHFO-FM. Most recently, the World Trade Center added a second theater: the 7,500-seat Pepsi Center WTC, which was completed in 2012. It is used primarily for concerts and stage shows. Functions WTC Tower has a seismic detector that monitors land movements to stop elevators during earthquakes. It is considered an intelligent building due to its intelligent light system. The tower is managed by a system that controls the facilities and equipment. This includes the electrics, mechanical ventilation, sanitation, elevators and fire protection. See also List of tallest buildings in Mexico City External links CIEC WTC Official Website Pepsi Center WTC Official Website Nuevo Portal Torre WTC Interview with Manuel Suárez - November 2005 Biography of Manuel Suárez via La Nueva España References Skyscraper office buildings in Mexico City Mexico Benito Juárez, Mexico City Buildings and structures with revolving restaurants Office buildings completed in 1972 1970s in Mexico City 20th-century architecture in Mexico Convention centers in Mexico Music venues in Mexico Theatres in Mexico City