城岛
An academic debate about the original location of Lutetia began in 2006, following the excavation in 1994–2005 of a large Gallic necropolis, with residences and temples, at Nanterre, along the Seine in the Paris suburbs. Some historians have put forward this settlement at Nanterre as the Lutetia of the Gauls, rather than the Île de la Cité. Other historians point out that Caesar described "Lutetia, fortress ("opidum") of the Paris, situated on an island." They say that the absence of traces of pre-Roman settlement discovered so far on the Île de la Cité is due primarily to the continuous building and rebuilding on the island over the centuries.