Kopanj is a prime example of a ‘solitary’ hill in the karst region, , rising 70 metres above the karst field, resembling an island – which it almost becomes during floods, especially in spring and autumn. Kopanj has been a place of interest since ancient times, evidenced by a prehistoric fort on its site. From the remains of this fort, the original Church of Marije Vnebovzete was built, first mentioned in 1433. During the Turkish invasions, a wall was built around the church, of which only parts remain today. The baroque church has undergone several transformations throughout history and was significantly damaged during World War II.
Next to the church is a rectory where Dr. France Prešeren, a renowned Slovenian poet, spent part of his childhood. His uncle, a village chaplain, taught him to read and write here. Just below the peak is an elementary school that has been operational since 1865.
A notable feature of Kopanj is a spring on its northern side, emerging 10 metres above the level of the karst field. This spring has a constant flow of water, even during the driest periods, and the water is drinkable. Folklore attributes healing powers to this water, especially for the eyes. The patroness of the spring is the Lourdes of Mati Božja, whose statue is located in a small chapel above it. Locals believe that if a woman wishes to conceive, she should drink water from this spring.