The settlement is arranged along the Via Emilia Parmense, merging into one with the lively hamlet of Roveleto, not far from the Lombard city of Cremona.
A compulsory passage for pilgrims, Cadeo originated as a "hospice/hostel" on the Via Emilia, which in the Middle Ages was popular with those traveling to Rome from northern Italy and neighboring nations.
The best period for a visit is probably the month of May, when the celebrations dedicated to the Virgin Mary take place.
The castle of Cadeo is mentioned for the first time in the fourteenth century, during which it was burned in 1310 on the orders of Alberto Scotti (lord of Piacenza fleeing from the enemies of Milan) and destroyed in 1336 by the troops of Azzo Visconti. It was destroyed again in 1449 by Angelo Sanvitale da Fiorenzuola. Unlike the neighboring hospital built in 1112 and of which only a heavily modified facade remains, the building is in a good state of conservation.
The shrine of the Blessed Virgin of Mount Carmel located in the hamlet of Roveleto and built in 18th-century Baroque style with neoclassical influences between 1750 and 1773, draws its origins from a pre-existing mistadello(small church).
In April, the Agriculture Fair.
The area falls within the route of the Via Francigena. The hamlet of Saliceto was the birthplace of Luigia Uttini, mother of Giuseppe Verdi; the parish church still has the organ with which the maestro perhaps composed some of his arias.