Valjevo is one the oldest town settlements in Serbia with the current population of about 60,000 inhabitants. It is considered an important urban and cultural centre. The name of the town dates back to 14th century and it was mentioned in Dubrovnik historical records as an important trade centre. It was conquered by the Ottoman Empire and liberated in the First Serbian Uprising in 1804. The remains of the Ottoman’s short conquest can be seen in the most charming part of town called Tešnjar with its cobbled, narrow streets, small cafes and galleries.
One of the cleanest European rivers, The River Gradac, is in the immediate vicinity of Valjevo as well as Petnica, a Science Center for extracurricular, informal science education along with its eco camp and summer school.