Opened in 2000 and designed to accommodate up to 2 million visitors each year, the Tate Modern in London is now visited by over 5 million people a year.One of its most spectacular destinations is the Turbine Hall, the cavernous center of the former power plant.

A 2003 Turbine Hall installation was The Weather Project by Olaf Ureliasson. An artificial roof of mirrors cut the hall in half vertically and a semi-circle of light illuminates the hall with a hazy gold accentuated by a fine mist drifting through the hall.

The Weather Project is an incredible example of how an architectural space can be transformed by an awarness of how design and lighting interact. A similiar principle applies to many of the Europe's Cathedrals, and is a creative tool for worship often lacking in contemporary church design.