The Marmara Region in northwestern Turkey is the country's bridge and connection to Europe, with Turkey's largest city, Istanbul, at its heart.
The region is named after the sea it surrounds: the Sea of Marmara, connected to the Aegean Sea by the Straits Dardanelles, and to the Black Sea by the Bosporus. The Sea of Marmara is considered the geographical border between Europe and Asia: the coastline to the north of the sea is European, while its southern and eastern coasts are in Asia. In addition to the Sea of Marmara, the region has coastlines on the Black Sea to the northeast and the Aegean Sea to the southwest.
The northwestern/European part of the region is one of few wide lowlands in the country, with the occasional gently sloping hill, except southwestern and northeastern coasts which are dominated by hilly areas. South and east parts of the region is more mountainous, or hilly at least. While the Marmara Region is the second smallest Turkish region in size (with only Southeastern Anatolia being smaller), it is only a bit smaller than Ireland or the Netherlands and Belgium combined.
This region is Turkey’s most populous and most heavily industrialized part, with the residential and industrial suburbs and exurbs of Istanbul going on for hundreds of kilometres towards any direction the geography permits, although you can still find primordial forests hardly seen by human eyes here and there.
Travellers often overlook Marmara Region except for Istanbul and a few sites in the southwest and southeast of the region, but there is not really a reason why they should—in addition to quite friendly and open locals, fairly good transportation links throughout and temperate climate which make travelling in the region a breeze, you will certainly find something to catch your glimpse in any part of this region, where empires have made their debut and have seen their fall, and where dense urban areas and farmlands interact with untouched wilderness beautifully.
While it is possible to come upon a village founded by immigrants from the Balkans in the early 1900s where old people speak the Pomak dialect of Bulgarian or some other Balkan language in the region, Turkish is by far the most common and the most useful language, as is in most of Turkey.
As both the Byzantine and Ottoman Empires were centred here, the Marmara Region has quite a lot of imperial monuments from each. While the Byzantine monuments are mostly in Istanbul with a number of intact artifacts in historically important, but nowadays provincial towns such as İznik, Tirilye and Vize. The Ottoman monuments, on the other hand, while can be found almost anywhere in the region, are best seen in Bursa, Edirne, and Istanbul—the three consecutive capitals of the empire.
The main wine areas of the region are the Şarköy District on the Marmara coast of Eastern Thrace which produces wine out of many varieties, the Marmara island of Avşa where the local wine is of varying quality but is often strong, and the Aegean island of Bozcaada which has a wine tradition dating back millenia ago.
The town of Susurluk in the south is renowned nationwide for its local foamy ayran, which is available in (and apparently advertised by) many rest areas along the main Istanbul–Izmir highway.