Les Tres Torres is a railway station situated under the Via Augusta in the Sarrià-Sant Gervasi district of Barcelona. During off-peak periods it is served by line L6 of the Barcelona Metro. During peak periods, additional services are provided by lines S5 and S55 of the Metro del Vallès commuter rail system, whilst service on line L6 is reduced or removed altogether. All these lines are operated by Ferrocarrils de la Generalitat de Catalunya, who also run the station.
The station has twin tracks and two 75 metres (246 ft) long side platforms.The line on which Les Tres Torres is located opened in 1863, but the first station on the site did not open until 1906. The current station was opened in 1952, when the line through the station was put underground.