Dikilitaş

Obelisk of Theodosius
The obelisk of Theodosius I in Istanbul
Location	Hippodrome of Constantinople (today Sultanahmet Square, Istanbul, Turkey)
Coordinates	41°00′21.24″N 28°58′31.43″E / 41.0059000°N 28.9753972°E / 41.0059000; 28.9753972
Height	18.54 metres (60.8 ft) With pedestal: 25.6 metres (84 ft)
Built	18th dynasty
Location of Obelisk of Theodosius in Istanbul

The Obelisk of Theodosius (Greek: Οβελίσκος του Θεοδόσιου Α΄, Turkish: Dikilitaş) is the Ancient Egyptian obelisk of Pharaoh Thutmose III (1479–1425 BC), first erected during the 18th dynasty of Egypt. It was re-erected in the Hippodrome of Constantinople (known today as At Meydanı or Sultanahmet Meydanı, in the modern city of Istanbul, Turkey) by the Roman emperor Theodosius I in the 4th century AD.