One of the best-preserved medieval fortresses in Bulgaria, built directly into the red sandstone rock faces that surround Belogradchik. The Romans established the first fortifications here in the 3rd century AD; Bulgarian rulers and later the Ottomans expanded it over the following centuries. The walls and towers integrate so seamlessly with the sandstone cliffs that it is sometimes hard to see where the rock ends and the masonry begins.
Walkways through the fortress offer elevated views over the rock formations and the town below. Three distinct courtyards — each defended by its own gate — give a sense of how the fortress worked as a serious piece of military architecture. Allow at least an hour to walk through properly. The entrance fee is modest and the site is well maintained.