From waterfalls come rainbows. Danish-Icelandic artist Olafur Eliasson's latest public project is a nearly 500-foot-long corridor that hovers above the rooftop of the ARoS Aarhus Kunstmuseum in Denmark. Your rainbow panorama is a circular walkway, about 10 feet wide and perched on slender 5-foot-tall columns, with glass walls that span the color spectrum. A permanent addition to the city skyline, the installation catches the sun's rays by day and is illuminated at night by spotlights embedded in the structure's floor.

Eliasson is well known for his large-scale environmental installations, such as 2009's New York City Waterfalls, a public art project featuring four 100-foot waterfalls constructed at prominent waterfront sites, such as the Brooklyn Bridge. Previously, Eliasson cloaked Tate Modern's Turbine Hall in artificially generated mist for The Weather Project (2003). Like Eliasson's earlier works, Your rainbow strives to re-create a natural phenomenon in an interactive way, offering museumgoers the opportunity to walk inside the rainbow.

The project began in 2007, when a panel of judges selected Eliasson's Your rainbow as the winning proposal to transform the rooftop space into what the museum hoped would be a "strong identity-creating landmark for ARoS and Aarhus city." Construction on Your rainbow, which cost more than $10 million, started in 2009 and was completed in May of last year.