The Cattolica of Stilo is a small Byzantine church in Calabria, built in the 9th century when the region belonged to the Byzantine Empire. The article names no builder or architect. Its name comes from the Greek katholiki, which referred to churches with a baptistery.
The plan is an inscribed cross, typical of the middle Byzantine age. It is built mainly of brick, and the southern section ends in three apses standing on three stone bases. Four columns divide the interior into five similar spaces. The central dome is slightly taller and larger than the four smaller domes.
The interior was once entirely covered with frescoes. A bell was built in 1577, when the church was converted to the Latin rite.

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