A new glazed memorial at Atocha Station in the centre of Madrid serves as a reminder of the victims of the terrorist attack that took place there on 11 March 2004. On that day,191 people were killed and 1,824 were injured in bomb explosions in four suburban trains. The winning competition entry for the erection of a memorial – by the group of young Madrid architects FAM – consists of a glazed cylinder above ground and commemorative space immediately below this with an area of 500 m2. Daylight penetrates the solid glass skin and illuminates the cobalt-blue commemorative space beneath. At night, the effect is reversed, when the glazed cylinder is lighted from within and becomes a gleaming work of art. Inside the cylinder is a transparent ETFE pneumatic construction stabilized by the higher air pressure in the commemorative space.