Adding all of them, to your itinerary would definitely be a great route, however since they are located far away, I guess you would need around 20 days in Turkey. Well, I've had a chance to visit them all, but I've seperated them into 4 summer time though. Here they are;
Archaeological Site of Troy
With its 4,000 years of history, Troy is a definite "must see" site in Turkey. Many thanks to Heinrich Scliemann, the German achaeologist, who found Troy around 1870s. But also he was the guy who ruined many layer of the site while trying to find the treasure of Priamos. Which means I am in a huge dilemma whether to thank this weird guy or not :)
Bursa and Cumalikizik
It was the capital of Ottomans. The city is famous with its ski resorts of Mount Uludag. Seljuk & Ottoman architectures can be seen in many of the buildings.
From 13th century to 20th, it was an important caravan station. A panoramic old town, with full of Ottoman structures such as houses and mosques. Safranbolu's architecture played a vital role throughout the Ottoman Empire.
Great Mosque of Divrigi
It definitely has so many details on its walls, inside an everything. A great mosque and a hospital complex, built in 1228-1229.
The Former capital of the Hittite Empire, is a major point with its size, the types of constructions such as royal residences, temples, storages etc, and its gates... Of course, Yazilikaya Temple is a must-see point after you explore Hattusha
Historic Areas of Istanbul
Has parts both in Asia and Europe, Istanbul is a brilliant spot to spend at least a week for history lovers. If istanbul is on your list to visit, I highly recommend you to take a look at this Istanbul tour program covers 3 nights / 4 days
It is one of the most ambitious constructions of the Hellenistic period. An artifical mountain top framed by two great temples littered. Definitely visit it in July or August, (May be around May) or you might be struggle with the snow
Neolithic Site of Catalhoyuk
Catalhoyuk was a Neolithic and Chalcolithic settlement near Konya city. Existed from 7500 BC to 5500, It is now, the largest and best preserved spot found in 2012.
It is better to be in a good condition if you would like to visit Pergamon. Acropolis is located upon a hill and thanks god there is a cable-car that you can use to go up. Pergamon museum, The red tower, and Asclepion should definitely be on your list if you are in Pergamon.
Located in Edirne (around 3 hours from Istanbul), it is an Ottoman mosque which was commissioned by Sultan Selim II and was built by the imperial architect Sinan. Just like the other Ottoman mosques in Historical peninsula of Istanbul, It is roofed with a huge dome and surrounded by semi-domes to decorate inside.
It is a remarkable archaeological spot which represents a unquie extant architectural example of the ancient Lycian Civilization.
Diyarbakir Fortress and Hevsel Gardens
This is great...! After I post this blog, the World Heritage Committee of UNESCO has added cultural sites in Diyarbakır, southeastern Turkey, to its World Heritage List. The city is located in the eastern part of Turkey and a major spot for eastern tour programs of Turkey
I am super happy that one of my favorite site is in the UNESCO heritage list now. It was an ancient Greek city located in the Aegean part of Turkey. Built in the 10th century BC by Attic and Greek colonists. The city was famed for the Artemis Temple - which is one of the seven wonders of the ancient world. But you are only able to see a column since it was destroyed by the Goths. I am not sure why did not they rebuild it. Checked it a lot but the later history is unfortunately not clear. However, the library of Ephesus, Terrace houses, Hose of Virgin Mary, the museum and the rest will definitely take your breath away...