Today is the third anniversary of the Madrid train bombings.
King Juan Carlos, Queen Sofia and senior government officials are to unveil a monument outside the Atocha rail station, one of four targets in an terrorist attack that ripped apart morning rush-hour commuter trains on March 11, 2004, laving 191 people dead and more than 1,800 people wounded.
The monument is an irregularly shaped, 11-meter-tall (35-foot-tall) glass cylinder with a transparent inner membrane bearing messages of condolence that Spaniards left at Atocha station after the attacks.