Krsan Castle - Kaštel Kršanski, Krsan, Istria County, Republic of Croatia.
Kršan Castle takes its name from the rocky karst mountains on which it was built. It was first mentioned in documents from 1274, concerning a peace agreement between the Patriarch of Aquileia, Raimondo Della Torre, and the owner of the area, Count Albert of Gorizia, following a conflict that began in 1268 after the patriarch attacked the settlement. The Horatii family subsequently ceased to exist, and in 1374 the castle was inherited by the Habsburg family.
The Habsburg dynasty gifted it to their vassals. From then on, the castle was referred to as the Round Castle (Kerschan). It subsequently changed hands several times. The last owners of this beautiful and majestic castle were the noble Plomin family.
Of the medieval castle, only the quadrangular tower remains well preserved. Later structures, such as the defensive and residential buildings, have been restored. Entrance to the fortress is through the well-preserved city gate. The courtyard features a 15th-century rectangular portal in the Gothic style.
In the 19th century, the book "Istrian Divorce" (Book of Istrian Borders) was discovered here. It was made by a priest. This important historical and legal document was published in 1852.