Other examples outside of Rome are the "insulae" at Ostia. They provide an insight into what an Insula may have been like during the second and third centuries AD. These particular structures at Ostia are also unique in that they show evidence of luxurious "insulae". Due to the rarity of evidence today it is uncertain as to how common these luxury "insulae" were. The floorplan allows us to determine what constitutes one of these luxury "insuale". Firstly, there is a rectangular living space called a "medianum" from which all the other rooms can be accessed. These attached reception rooms were different sizes at either end and were typically partitioned further into two separated rooms but sometimes remained each as one. Large glazed windows allowed light into these rooms. These windows would often overlook a garden, courtyard or the street. On the adjacent sides of the "medianum" were the "cubiculī", usually two of them. Larger "insulae" at Ostia suggest that the upper floors could have had kitchens, latrines, and even piped water. Further luxurious features seen in Ostia include ornate pilasters or columns decorating exterior doors to staircases leading up to the apartments. The decorations suggest that these particular Insulae probably housed wealthy individuals who lived there on a long term basis.