Vratna Gates are three natural stone bridges on the Miroč mountain, two in the vicinity of the medieval Vratna monastery, and the third farther away into the depths of the Vratna river gorge, in Bor, eastern Serbia. Stone gates of this type are rare. Similar ones can be found in Slovenia, France and in Colorado, in the United States. It has been declared a geomorphological natural monument and placed under the state protection in 1957.

Beautifully carved tombstones fill this unmarked graveyard, uniquely situated near the village's famous stone wine cellars. With less than 500 inhabitants, the village of Rajac is a typical small Balkan settlement, except for one peculiar feature not common in Serbia. Just outside the village there are 20 or so windowless stone structures. Though they look like houses, no one lives there.