"Your Rainbow Panorama", a Rainbow-coloured glass walkway on the roof of the Danish art museum ARoS Aarhus Kuntsmuseum, by Danish-Icelandic artist Olafur Eliasson. The permanent piece consists of a 150-metre-long and three-metre-wide self-contained circular walkway with glass that moves through all of the colours of the spectrum. The 52-metre-diameter walkway "floats" 3.5 metres above the roof and stretches like a multi-coloured halo -- supported by 12 slender columns. The piece opened to the public on 28 May, 2011. In order to access the walkway, visitors can take stairs or a lift from the museum in order to appreciate a panoramic view tinted in different colours.