The old town of Korčula is surrounded by walls, and the streets are arranged in a herringbone pattern allowing free circulation of air but protecting against strong winds. Korčula is tightly built on a promontory that guards the narrow sound between the island and the mainland. Building outside the walls was forbidden until the 18th century, and the wooden drawbridge was only replaced in 1863. All of Korčula's narrow streets are stepped with the notable exception of the street running alongside the southeastern wall. The street is called the Street of Thoughts as one did not have to worry about the steps.
The town's historic sites include the central Romanesque-Gothic Cathedral of St Mark (built from 1301 to 1806), the 15th-century Franciscan monastery with a Venetian Gothic cloister, the civic council chambers, the palace of the former Venetian governors, grand 15th- and 16th-century palaces of the local merchant nobles, and the massive city fortifications.
Cursola, as it was called in Latin, became an episcopal see in the early 14th century, when the bishop of Ston asked to be authorized to transfer his seat there because of Serb pressure on Ston. This was granted and he was made bishop also of a new diocese of Cursola united with his previous one. In 1541, the Ragusans asked for the separation of ecclesiastical jurisdiction over Ston, which they had conquered, from Cursola, which in the previous century had become a Venetian possession. In 1828, when both the Korčula and Ragusa (Dubrovnik) belonged to the Austrian Empire, the territory of the diocese of Cursola was made part of that of Dubrovnik. No longer a residential bishopric, Cursola is today listed by the Catholic Church as a titular see.
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.