Ostuni Cathedral was originally a church practising Orthodox rites prior to the year 1000. In 1228-1229, the present Romanesque church was erected by Frederick II of Swabia. The earthquake of 1456, strongly felt in Brindisi, damaged it. During 1469-1495 it was again rebuilt in a Gothic style.
The façade acquired its elegant rose window in the 15th century. The church once had four such windows. One of the portals is dedicated to Saint Blaise (San Biagio), one of the patrons of the city, and has the saint carved on the portal. A restoration in the 1970s tried to remove stucco decorations that covered the original Romanesque and Gothic architecture.
The interior has a number of artworks that covered the ceiling and altars. The Chapel of the Sacred Heart, once of St Cajetan (Gaetano) had a canvas of the saint attributed to Domenico Antonio Vaccaro. The Cappellone dell'Immacolata was decorated in the 18th century. The sacristy has a large venerated icon depicting Saint Oronzo. One Chapel is dedicated to the patron saints of Ostuni: Saint Blaise, Saint Augustine, Saint Orontius, and Saint Irene. The church once had a canvas, now stolen, of Santa Lucia by Palma il Giovane. The apse has an altarpiece of the Assunta, and the chapel of Santa Maria della Sanità has a fresco depicting Saint Catherine of Alexandria. A niche of the counter-facade has a 15th-century statue of Christ.
The cathedral archives hold nearly 200 parchments dating to the 12th century.
In 1986 it became a co-cathedral of the Archdiocese of Brindisi-Ostuni, and in 2011 was granted the status of a minor basilica.
References:Celje Castle was once the largest fortification on Slovenian territory. The first fortified building on the site (a Romanesque palace) was built in the first half of the 13th century by the Counts of Heunburg from Carinthia on the stony outcrop on the western side of the ridge where the castle stands. It had five sides, or four plus the southern side, which was a natural defence. The first written records of the castle date back to between 1125 and 1137; it was probably built by Count Gunter. In the western section of the castle, there was a building with several floors. Remains of the walls of this palatium have survived. In the eastern section, there was an enclosed courtyard with large water reservoirs. The eastern wall, which protects the castle from its most exposed side, was around three metres thicker than the rest of the curtain wall. The wall was topped with a parapet and protected walkway.