Since the Compañia Telefónica Nacional de España was founded in Madrid in 1900, it has grown into a worldwide provider of telecommunications with revenue exceeding €50 billion. CTNE remains Spain’s dominate telephone provider. In 1929, the company moved into their headquarters on Gran Vía. At 289 feet, the Telefónica Building was Madrid’s tallest building for 24 years until 1953. Edifico Telefónica was designed by Ignacio de Cárdenas in collaboration with American architect Louis Weeks.
