Altinkum is a neighbourhood of the municipality and district of Didim, Aydin Province, Turkey. It is a seaside resort on the Aegean Sea, 123 km from Aydin. It is near the ancient Temple of Apollo and the ruins of the Ionian city of Didyma (Didim).

Altinkum and Didim are located in Aydin Province between the city of Izmir and the resort Bodrum, about a 90-minute car ride either direction. Nearest airports: Bodrum Milas Airport and Izmir Adnan Menderes Airport however you can always access from Dalaman Airport same time.

Altinkum, or “golden sands”, is the beach and promenade area within the town of Didim. Visitors are predominantly Turkish or British but over recent years tourists from countries such as Hungary, Bulgaria and Romania have been visiting in increasing numbers, mostly families and the older generation. Set on a sandy bay, the resort is relaxed and informal. There are three beaches within easy reach, and all have been awarded the Blue Flag Award. With 55 km (34 miles) of coastline in the immediate area, there are many beaches to explore, including eleven that have been awarded a Blue Flag classification.

Altinkum and Didim (previously Didyma or Yenihisar) is surrounded by a number of ancient sites, most notably, the Apollo Temple, located on the outskirts of Didim. The main temple was built in the 8th century B.C., was surrounded by columns at the beginning of the 6th century B.C. and completed around 550 B.C.

Miletos and Ephesus is a short drive away, and also Meryemana - said to be the Virgin Mary's last home. Many pilgrims visit this place every year.

Didim was originally referred to as Didyma and, next to Delphi, was the most renowned oracle centre of the Hellenic world, first mentioned among the Greeks in the Homeric Hymn to Apollo but preceding literacy and even the colonization of Ionia.

Didyma was originally home to a pre-Greek religious group of nomads that grew up around a sacred wood and holy spring. This natural spring was the place where Leto conceived and gave birth to the twins Artemis and Apollo who were fathered by Zeus.

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