There is not much left of this roman palace built in the 2nd century CE except the lofty arches. Built during the reign of emperor Septimius Severus, this artists impression shows what palaces on Palatine Hill would have looked like.
Below is a photograph of one of the sides of the Domus Severiana. Bracketed HDR of three shots at -2, 0 and +2 eV, and then processed in Photomatix Pro and Adobe Lightroom Classic. Click on the photo for a large version on Flickr.