Turkish archaeologists unearthed a 2000-year-old lighthouse at the ancient Roman port of Patara, near southern town of Kas, Antalya, discovering probably the oldest such structure that managed to remain intact.

The 12-meter-high lighthouse was built under the reign of Emperor Nero who ruled from 54 to 68, Professor Havva Iskan Isik, head of the excavation team reported.

"The oldest known lighthouse is the one in Alexandria but there is nothing left of it. So, the lighthouse at the Patara port is the oldest one that has remained intact," she said.

Isik said there might be a second lighthouse at the other edge of the port under a huge debris of soil, which she said was to be excavated at a later time.