Evros area has several interesting caves. Some of the most famous are: The CAVE in Makri located next to the sea. It was believed to be home of Polifimos Cyclopes. The cave has two chambers on its first floor and another one in its second floor, both full of stalagmites and stalactites. From the pieces of vessels found in its interior it is believed that it was used during antiquity.
DIO SPILIES in Didimoticho. They are located next to Mitropoli. According to tradition, here is where Karolos the XII of Sweden was imprisoned by the Turks in 1713.