The church is entered via a double staircase positioned along the façade, which appears majestically, split vertically and horizontally in three parts by pilasters and cornices, concluding with a curvilinear tympanum. Rising up on the left is a square-shaped bell tower, topped by a small dome that recalls styles hailing from across the Alps. Sant’Ignazio di Loyola was erected in the historic centre of Oliena between the 17th and 18th centuries as part of a project by the master builder Domenico Spotorno on behalf of the Company of Jesus. The construction works of the Jesuit church and college lasted more than a century (1644-1758), hence the current structure is fundamentally of the 18th century. The vast interior space consists in a nave with three chapels on each side, separated by pillars supporting a jutting cornice, which serves as a barrel vault.