Montjuïc Communications Tower

The Montjuïc Communications Tower (Torre de Comunicacions de Montjuïc, ), popularly known as Torre Calatrava and Torre Telefónica, is a telecommunication tower in the Montjuïc neighbourhood of Barcelona, Catalonia, Spain. It was designed by Santiago Calatrava, with construction taking place from 1989 to 1992. The white tower was built for Telefónica to transmit television coverage of the 1992 Summer Olympic Games in Barcelona. The 136 m tower is located in the Olympic park and represents an athlete holding the Olympic Flame.

The base is covered with trencadís, Gaudí's mosaic technique created from broken tile shards.

Sundial
Because of the tower's orientation, it works also as a giant sundial, which uses the Europa Square to indicate the hour.