Casalecchio's name is derived from
Casaliculum ("collection of little houses"), and from the presence of the
Reno River. The site has archaeological treasures dating from the
Paleolithic and
Villanovan eras;
Celtic and
Etruscan remains have also been found. This is the site of the Celtic city of Casalecchio, one of the few exclusively
Celtic settlements of
Northern Italy or
Cisalpine Gaul. It likely belonged to the Celtic tribe of the
Boii, who settled this area around 400 BC. The
Battle of Casalecchio took place here on 26 June 1402. Casalecchio was heavily damaged by Allied bombers during
World War II. On 6 December 1990, an
MB-326 military jet of the Italian Air Force
crashed into the Gaetano Salvemini Technical Institute, a high school, killing twelve students and injuring 88 other students and staff. The aircraft had been abandoned minutes earlier by its pilot following an onboard fire. ==Economy==