Torreta de Guardamar

Torreta de Guardamar or Torre de los Americanos is a 380-metre tall guyed radio mast erected by the US Navy near Guardamar del Segura, Spain. It was built in 1962 and is the tallest architectural structure in both the Iberian Peninsula and the European Union, and the tallest military structure in Europe. Its base is situated 64 metres above sea level at a distance of 1.4 km from the sea.

Source: Wikipedia