There are still a few ancient monuments remaining in Oliveto: traces of an 11th century
castle; the Oratory of St. Mary of the Graces, which was already in existance in the
year 1000 and has recently been restored; the bell tower of the parish church of St.
Paul, with its side entrance instead of façade, which houses a 17th century altarpiece
attributed to the Bolognese painter Elisabetta Sirani; a large Medieval building known
as the Jew's Big House (Casa Grande dell'Ebreo), home to the local Jewish community
and the first bank in the region, which displays an old, cracked, terracotta plaque
whose barely discernable Latin writing indicates the date of construction: 1410 by
Salomon Mathasia; and finally the “Bronzina,” built in the late Middle-Ages (except
for its tower, built in the 11th century). In 1527 the Bronzina hosted the Grandees
of Spain, and later, in about the 16th century, was used as a hospital to isolate
and treat people struck with diseases during the various epidemics, and then turned
into a bronze foundry in 1775.