Sagalassos fountain (Turkey, ca. 160-180 AD). Located roughly 110 km north of Antalya, the ruins of the city extend 2.5 km from west to east and 1.5 km from north to south. The excavations at Sagalassos are now among the largest archaeological projects in the Mediterranean. Sagalassos was a prosperous city for over 1000 years, from early Hellenistic times until it was struck by a devastating earthquake in the 7th century AD when the city was abandoned.
Hagia Sophia (from the Greek: Ἁγία Σοφία, Holy Wisdom; Latin: Sancta Sophia or Sancta Sapientia; Turkish: Ayasofya) is a former Orthodox patriarchal basilica, later a mosque, and now a museum in Istanbul, Turkey.
Kadikoy's a huge district on the Asian side of Istanbul with a population of about half a million people, but it's got a fairly compact centre occupying the area around the ferry port and up the hill towards the upscale Moda . My favorite bookstores ,cafes are here.
Lycian Tombs / The Lycian tombs near Dalyan in Turkey are a series of tombs carved out of a cliff face. They were built by the Lycian people (allies of the Trojans during the Trojan war) who were generally passed from conqueror to conqueror through history until the majority (Greek speakers) were forced to leave Turkey and move to Greece after the Greco-Turkish war in a population exchange. The ruins of the ancient trading city Kaunos are nearby so it is worth a visit.
Ani (Armenian: Անի) is a ruined and uninhabited medieval Armenian city-site situated in the Turkish province of Kars, near the border with Armenia. It was once the capital of a medieval Armenian kingdom that covered much of present day Armenia and eastern Turkey. At its height, Ani had a population of 100,000–200,000 people and was the rival of Constantinople, Baghdad and Cairo. Long ago renowned for its splendor and magnificence, Ani has been abandoned for centuries.