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In page Palace:

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Very little of the medieval Louvre Palace, one of the most magnificent, has survived above ground. Similar fates befell the main palaces of the Byzantine Empire in Constantinople: the Great Palace of Constantinople, Boukoleon Palace, and Palace of Blachernae.[citation needed] The Palace of the Porphyrogenitus, a part of the Palace of Blachernae, has significant remains and now houses a museum.