Atocha station memorial

The Atocha station memorial was a memorial monument located at Atocha station in Madrid, Spain, that commemorated the 193 victims of the 11 March 2004 Madrid train bombings. Furthermore, it also honored the special forces agent who died when seven suicide bombers blew themselves up on 3 April 2004 during a raid on an apartment used by the bombers. The 11 m (36 ft) tall cylinder stood above Atocha station, the destination of the four trains that were attacked. Texts composed of hundreds of expressions of grief sent in the days after the attack from all over the world were printed on a clear colourless membrane that was inflated by air pressure, rising balloon-like inside a cylinder. That structure was composed of glass blocks and sat on a platform or terrace overhead. The light in the empty blue room below came from this source alone. At night the cylinder was illuminated by lamps within its base and could be seen throughout the station neighborhood. King Juan Carlos, Queen Sofia and Prime Minister José Luis Rodríguez Zapatero attended a ceremony at the site on the third anniversary of the bombings, 11 March 2007.