Blaca hermitage, also known as Pustinja Blaca in Croatian, is a unique cultural and historical site located on the island of Brač, off the coast of Croatia. The hermitage is situated in a remote valley on the southern slopes of the island and is surrounded by a rocky landscape that makes it challenging to access.

The Blaca hermitage was founded in the 16th century by two Glagolitic priests, who wanted to escape from the Ottoman invasion of the region. The hermitage soon became a cultural, scientific, and spiritual center, with the monks collecting books, manuscripts, and works of art over the years. They also established a school of astronomy and cartography, and many famous scientists and researchers visited the hermitage during its heyday.

Today, the Blaca hermitage is open to visitors who can explore the many buildings, such as the church, the library, and the living quarters of the monks. The collection of books and manuscripts is still intact, and there are many scientific instruments on display, including telescopes and microscopes. Visitors can also see the restored frescoes and artwork in the church, which date back to the 18th century.

The Blaca hermitage is not only a cultural and historical site, but it also provides an opportunity for visitors to enjoy the natural beauty of the island of Brač. The valley where the hermitage is situated is surrounded by high cliffs, and visitors can hike or cycle to explore the area. The site also offers spectacular views of the Adriatic Sea and the nearby islands.