There are no precise records regarding the date of construction of this church, dedicated to the martyr Sisinnio from Villacidro (122 - 186). Already considered ancient in the XVII century, a small parchment preserved in the Saint’s shrine testifies it was most probably built in the XI – XII centuries. 

The church’s large dimension, the lateral chapels inside the church, the three-sided external portico, alldifferentiate it from the majority of Sardinian country churches giving it an unusual architectural style. 

The present day establishment dates back to 1600, however, the church underwent a few restorations through out the centuries. Today it appears with a barrel vault, surrounded by a three-sided portico from the 600s made from woven cane and supported by stone pillars.

Inside, besides the Saint’s effigy, an old hexagonal pulpit is still admirable, richly worked and ornate with anthropomorphic decorations and symbols.

A natural exhibition of amazing beauty can be experienced in the millenary “Parco di olivastri” (Olive grove Park) that surrounds the San Sisinnio church, a true treasure within the riches of the environmental patrimony of Villacidro. It is one of the most important olive groves in Sardinia; some specimens can reach a height of up to 13 meters and have a trunk circumference of more than 5 meters. Their exaggerated forms offer an impressive and magical scenario to the century old San Sisinnio legend, he that exterminated the horrific witches in many a way.