Hills of all sizes with vineyards and sunflower fields as far as the eye can see. This is the region of Turkey known as Trakya. It is separated from the rest of Turkey by the Bosphorus, the Sea of Marmara and the Dardenelle Straits. The first thing a visitor coming from Europe into Edirne would see is the Selimiye mosque, a masterpiece of the architect Sinan. It seems as though this city boasts proudly of hosting the structures most characteristic of Ottoman architecture.
The cities found in this region are , Bilecik, Bursa,  Edirne, Istanbul, Kirklareli, Kocaeli, Sakarya,Tekirdag and Yalova.

The region of Marmara has a turbulent past. 481 years before the birth of Jesus, during the II Persian War, the Persian King Xerxes made a bridge of boats over the Dardanelle Straits between Abydos and Sestos. In the same place we have the renowned love affair of Leander and Hera, who were buried in the waters of the strait. And, it was here that Mustafa Kemal won the first big victory against enemy forces in World War I. 

The lively city of Izmit with its fruit orchards and vegetable gardens is now an industrial center. Nearby is Hereke famous for its carpets. 

The city of Gebze, on the north of the Marmara Sea, has a very rich historical past and the city of Iznik, renowned during Ottoman times for its glazed tiles, is worth paying a visit. 

The land of silk, Bursa was the first capital city of the Ottoman Empire. In this city, which has come to be identified with lush green, places worth visiting are as follows: The Green Mosque (Yesil Cami), The Green Tomb (Yesil Turbe) and its splendid gardens, The Magnificent Mosque (Ulu Cami), Emir Sultan and Yildirim Mosques and the Ethnographic Museum. 

The country's first ski resort was built on Uludag Mountain, which soars into the air just south of the city. 

Tekirdag, which has beautiful examples of Ottoman architecture and broad beaches, is known for its vineyards and wine festivals. 

Balikesir is the center of a broad and important region. To the north is Gonen with its famous thermal springs and the commercial port of Bandirma. After Istanbul, this port is the biggest in the Marmara Sea. On the shores of Lake Manyas near Bandirma is the Bird Heaven (Kuscenneti) National Park. 
 

One the shores of the Marmara Sea are a whole host of beautiful beaches and holiday resorts. Among them are Cinarcik, Armutlu, Gemlik, Mudanya, Erdek, the Marmara and Avsa Islands, Denizkent, Sarköy, Silivri and lastly Yalova, a site famous for its thermal springs.