The archaeological area of Aquileia is one of the most important in Italy. Some archaeological remains are now visible outdoors with free access. These include the forum, the river port, the late antiquity markets, a necropolis area known as "sepolcreto" (burial ground) and some domus that feature remarkable mosaic fragments. Other remains, meanwhile, are contained within specific museum structures that protect the precious mosaics: the Early Christian Museum, the Crypt of Frescoes in the Basilica, the Südhalle of the Baptistery, the Episcopal Palace and Domus area.