Halfeti, majority of which lies under the waters of Birecik Dam, used to be called as ''Hidden Paradise'' with the orchards at the hillside of Euphrates, yard-type stone houses, and flower gardens.
When Halfeti was submerged under the water, the people living in the region migrated to Karaotlak Region, 7 km away from Halfeti. The ruins of Halfeti at the hillsides and Euphrates hillside quickly improved the tourism in the region.
Halfeti is also named as ‘Cittaslow’ (The Calm City).
Halfeti Houses, mostly consisting of two stories, flat roof and made up of stones, have an order, which do not shadow each other since they are parallel towards Euphrates. The black rose that can only be raised in Halfeti in Turkey, is an accessory to ever house in the district with no exception.
Rumkale is a cultural heritage that is commemorated with Halfeti. It is possible to travel the beautiful Savaşan village abandoned as a result of over floating of the dam and Rumkale from Halfeti by boat.
One of the most significant places in the history of Christianity, Rumkale carries architectural ruins of Late Roman and Middle Age characteristics. In the castle with its 3500 m2 field, you can find the ruins of columns and bushes, Aziz Nerses Church (1175), Barşavma Monastery (13th century), water cisterns, and spiral well and a ditch with 8 meters width and 75 meters depth.
The reason why Rumkale was in a significant place under the name of Hromgila in the 11th century was thanks to the story that during the Roman era Johannes, one of the apostles of Jesus, resided at that place and produced copies of the Bible in a room caved inside the rocks. Moreover, in the 12th century, when the Poet Saint Nerses gathered all ambassadors of the empire in order to unite the sectarians, it contributed to the significance of the castle.
The spiritual leader of the Armenian Catholic Church united in 18th century, still has the title of Hromgila and his office is in Beirut.
Having visited Rumkale in 1838, Marshall Helmut von Moltke mentioned that it was difficult to detect where rocks ended and artefact started and that the Euphrates River flew through the side like a silver lining over the castle.