The Montjuïc Communications Tower (Catalan: Torre de Comunicacions de Montjuïc, IPA: [ˈtorə ðə kumunikəsiˈonz ðə muɲʒuˈik]), popularly known as Torre Calatrava and Torre Telefónica, is a telecommunication tower in the Montjuïc neighborhood of Barcelona, Catalonia, Spain. Designed by Santiago Calatrava, construction on the tower began in 1989 and was completed in 1992. The white tower was built for Telefónica to transmit television coverage of the 1992 Summer Olympics Games in Barcelona. The 136 m (446 ft) tower is located in the Olympic park, and represents an athlete holding the Olympic Flame.
Because of the tower's orientation, it works also as a giant sundial, which uses the Europa square to indicate the hour.
Barcelona (English //, Catalan: [bərsəˈɫonə], Spanish: [barθeˈlona]) is the capital of Catalonia and the second largest city in Spain, after Madrid, with a population of 1,620,943 within its administrative limits on a land area of 101.4 km2 (39 sq mi). The urban area of Barcelona extends beyond the administrative city limits with a population of around 4.5 million within an area of 803 km2 (310 sq mi), being the sixth-most populous urban area in the European Union after Paris, London, the Ruhr, Madrid and Milan. About five million people live in the Barcelona metropolitan area. It is also the largest metropolis on the Mediterranean Sea. It is located on the Mediterranean coast between the mouths of the rivers Llobregat and Besòs and is bounded to the west by the Serra de Collserola ridge (512 metres (1,680 ft)).