Vratna is a river in eastern Serbia located in a village of the same name, not far from the Brza Palanka and the right tributary of the Danube. At the end of its course, a monastery stands believed to have been constructed during the fourteenth century.
On the gorge of the river, there are three natural stone bridges, two of which are located near the monastery. The monastery and bridges are reachable via a hike. Near the river, other attractions are located including three unexplored caves.