Peter Erskine: Spectrum of Time, Rainbow Sundial calendar. Visitors walk inside a living map of the solar year. Each "Rainbow Sundial calendar" is a unique joining of astronomy, architecture, locale, and art.
PalacIo de Cristal, Madrid - Spain - A Reflective Palace Of Rainbows, 2006 The Palacio de Cristal was originally built in the late in Madrid, Spain. In 2006 artist Kimsooja transformed it into this rainbow reflecting palace.