The Emperor's Palace in Milan was founded in about 291 AD by emperor Diocletian. Here Constantine and Licinius issued the Edict of Milan in 313 AD.
Residential and ambassadorial sectors, private baths and the circus, where the Emperor appeared solemnly to his subjects, and victory in chariot races became symbolic of Imperial victories, took up an entire sector of the city. The only visible traces of this vast polyfunctional quarter, which stayed in use perhaps up until the tenth century, are the remains of an ambassadorial building which had central heating; many archaeological remains are probably to be found under the buildings around Via Brisa.
Louisenlund is a site with one of Denmark's largest collection of megaliths. Some 50 stones standing upright among the trees, many of them over 2.5 metres high. The megaliths, which bear no inscription, stand on low mounds or over graves where the remains of burnt bones are buried. In the early Bronze Age and late Iron Age (1100 BC), it appears to have been common practice to set megaliths over graves of this kind. The stones stand alone or in small groups. As the site has not been archeologically investigated, it is not known why the stones were raised there. Another important megalithic site on Bornholm is Gryet, a small wooded area 5 kilometres west of Nexø. Originally it had more than 60 megaliths. Some have now been removed while half those remaining have fallen to the ground. The highest of them, once standing on the mound towards the south of the wood, was removed in the 17th century to be used as a gravestone. Louisenlund was bought by King Frederik VII when he visited Bornholm in 1851. He named it after his mistress, Countess Louise Danner.