ABS-CBN Broadcasting Center

The ABS-CBN Broadcasting Center (also called ABS-CBN Broadcast Center; formerly known as Broadcast Plaza from 1974 to 1986 and current edifice formerly spelled officially as ABS-CBN Broadcasting Centre) is a soon-to-be-demolished original headquarters of the Filipino media and entertainment company ABS-CBN Corporation and its subsidiaries located at Sgt. Esguerra Avenue corner Mother Ignacia Street, Diliman, Quezon City, Philippines .

The broadcasting center, conceptualized by ABS-CBN's then-President Eugenio Lopez Jr., began construction on February 24, 1967 and was opened on December 18, 1968 by then-president Ferdinand E. Marcos and then-first lady Imelda Marcos. Prior to the opening, ABS-CBN held headquarters in two separate buildings: the ABS building along Roxas Boulevard, Pasay (then in the province of Rizal) for ABS-CBN's Manila TV stations at that time (i.e. DZAQ-TV 3 and DZXL-TV 9), and the Chronicle Building along Aduana Street, Intramuros, Manila for its Manila radio stations. With the opening, ABS-CBN's radio and TV operations were housed in one building. ABS-CBN would soon sell the Roxas Boulevard studios to Kanlaon Broadcasting System or KBS (now known as Radio Philippines Network or RPN), which then took Channel 9 and prompted ABS-CBN to switch from Channels 3 and 9 to Channels 2 and 4.

When it was opened, it was the most advanced TV broadcasting facility in Asia. ABS-CBN mentioned that before Martial Law, it was once the training ground of TV electronics engineers from other countries. The new TV transmitter tower known as the Millennium Transmitter in the complex would begin beaming Channel 2 and 4's signals in 1969.

On September 21, 1972, ABS-CBN was shut down after then-President Ferdinand Marcos declared martial law. All of its properties, which included the Broadcast Center, were seized from the company.

The facility was not to be used again at least until RPN (then KBS until renamed it to the latter in 1975), whose first facility sold by ABS-CBN was destroyed by a fire, took over the facility in 1973. It also became home of two newly formed networks BBC which took Channel 2 and Government Television (GTV) which took Channel 4 on February 2, 1974. The facility was also renamed as Broadcast Plaza.

RPN and BBC, were all owned by Roberto Benedicto (a prominent crony of Marcos − along with IBC, in which Benedicto bought the company (including its flagship channel 13) from the Canoys, who owns RMN and the Sorianos (as Inter-Island Broadcasting Corporation) in 1975; and IBC which is still based from then town of San Juan del Monte, Rizal province (now city of San Juan, Metro Manila) at that time), and GTV was owned by the government through National Media Production Center (NMPC). Benedicto owned the facility without any compensation. The crony-owned networks used ABS-CBN's facilities without even paying the company's owners, the Lopezes, making the company's technologies gradually dilapidated, resulting in it losing its prestige as one of the most advanced broadcasting centers in Asia.

In July 1978, RPN and BBC left the Broadcast Plaza (along with IBC from San Juan del Monte) for their new home in the Broadcast City, situated in Old Balara in Quezon City, leaving GTV, which at that point was relaunched as Maharlika Broadcasting System (MBS) two years later, as the sole tenant of the facility.

In 1980, the Bureau of Broadcasts (BB), a radio network also owned by the government under the Department/Ministry of Public Information, was also transferred to Broadcast Plaza from Philippine Communications Center (PHILCOMCEN) building at the corners of ADB Avenue and Ortigas Avenue in Ortigas Center, Pasig, Metro Manila after the Office of Media Affairs was created to provide a unitary form of media for both NMPC and the BB.