As a forerunner to next week's 'Noche en Blanco' (White Night), Madrid's art galleries will be opening their doors tomorrow night until midnight. An initiative of Arte Madrid over 40 galleries will participate. For more details download their pdf document. More details on Noche en Blanco will follow this week. In the meantime you may want to check out Damian Corrigan's Noche en Blanco page on About.com.