The first traces of human presence in Lescar date back to 2005 BC ('tumuli' and funeral urns).
At the beginning of our era, the Romans built a city to which they gave the name of the conquered tribe: Beneharnum.
The Gallo-Roman city became the first capital of Bearn and then a bishopric from the 6th century.
It took the name of Lescar around the year 1000. Located on the Way of Saint James, the walled city retained its status of bishopric until the Revolution.