When in Istanbul, stay in the Sultanahmet area..where both the Aya Sofia and Blue Mosque are located. It's a stunning area where you feel like you've just stepped back in time. There is a good tram system. The restaurants are fantastic, and don't be nervous about the 'hard sell', it's just their way. Get some street food then chill out on the banks of the Bosphorous for a cheap meal with a priceless view. If you're a bit adventurous, check out a Galatasaray soccer match - they're quite fanatical!

for sure sanli urfa, olympos (next to antalya), konya and nemrud

To look for? See answers above. To lookout for? Waiters in touristy areas; bus drivers from Pamukkale to Cappadocia - they try to rip you off; touts in Kapali Carsi (big bazaar) in Istanbul - annoying, rude and asking too much money.

if you choose Istanbul to visit. you should stay there for one month. it is really amazing and charming city. Also all coastal side of turkey is amazing like heaven. Fethiye, marmaris, Bodrum etc.If your choice is quite. you can go to olympos, Kas or Kelebekler Vadisi. Capadoccia is the wonderful place in the central reigon in Turkey. I can extend my list.=)

Try and see some of the Greco-Roman ruins along the Aegean and Mediterranean coasts and surrounding area such as Ephesus, Aphrodisias, Milet, Didyma, Fethiye, Caunos (near Dalyan, and of course a visit to Dalyan turtle beach). It all depends upon your interests and reasons for going to Turkey.

first of all where in turkey? is a big country!!!

Go to the streets with the old wooden houses in Istanbul before everything is torn down.

Pamukkale, is a natural site and attraction in south-western Turkey. It is recognized as a World Heritage Sites. The tectonic movements gave rise to the emergence of a number of very hot springs. Ephesus, the ruins are a favorite international and local tourist attraction.

Istanbul - Grand Bazar, Hagia Sofia, Sultan Ahmets palace, The old Bazar, to go over the bridge between Europe and Asia, and with one leg to be in Europe and with the second in Asia!

certainly İstanbul..