Sakarya Province in the context of "Sapanca"

Bursa Province (Turkish: Bursa ili) is a province and metropolitan municipality in Turkey along the Sea of Marmara coast in northwestern Anatolia. It borders Balıkesir to the west, Kütahya to the south, Bilecik and Sakarya to the east, Kocaeli to the northeast and Yalova to the north. Its area is 10,813 km, and its population is 3,194,720 (2022). Its traffic code is 16.

Almost all of Bursa Province (including the city of Bursa) is in the Marmara region, but the districts of Büyükorhan, Harmancık, Keles and Orhaneli are in the Aegean Region.

Bilecik Province (Turkish: Bilecik ili) is a province in midwest Turkey, neighboring Bursa to the west, Kocaeli and Sakarya to the north, Bolu to the east, Eskişehir to the southeast and Kütahya to the south. Its area is 4,179 km, and its population is 228,673 (2022). Most of the province laid down in Marmara region but eastern parts of Gölpazarı and Söğüt district and districts of İnhisar and Yenipazar remained in Black Sea Region, smaller southeastern parts of Bozüyük and Söğüt remained in Central Anatolia Region and smaller southwestern part of Bozüyük remained in Aegean Region.

Kocaeli Province (Turkish: Kocaeli ili, pronounced [koˈdʒaeli]) is a province and metropolitan municipality of Turkey and one of only three not to have the same official name as its capital, İzmit, which is thus also sometimes called Kocaeli. Its area is 3,397 km (1,312 sq mi), and its population is 2,102,907 (2023). The province is the successor of the Ottoman-era Sanjak of Kocaeli. The largest towns in the province are İzmit and Gebze. The traffic code is 41.

The province is located at the easternmost end of the Sea of Marmara around the Gulf of İzmit. Kocaeli is bordered by the province of Istanbul and the Marmara Sea to the west, the Black Sea to the north, the province of Sakarya to the east, the province of Bursa to the south and the province of Yalova to the southwest. The metropolitan area of Istanbul extends to the Kocaeli-Istanbul provincial border.

Otokar Otomotiv ve Savunma Sanayi A.Ş., also known simply as Otokar, is a Turkish bus and military vehicle manufacturer headquartered in Sakarya, Turkey. Otokar is a subsidiary of Koç Holding.

Toyota Motor Manufacturing Türkiye (TMMT) is one of Toyota's vehicle production bases in Europe. It is located in Adapazarı, Sakarya, Turkey, and has been manufacturing the Corolla (since 1994), the Corolla Verso, the Verso (2009–2018), the Auris (2007–2012), and the Toyota C-HR (2016–present). A majority of the production is exported to over 30 countries, most of which are in Europe.

TMMT, owned by Toyota Motor Europe NV/SA (90%), and Mitsui & Co., Ltd. (10%), has a total investment of €212 billion, and currently employs around 5,400 people.

The Hemshin people (Armenian: Համշենցիներ, Hamshentsiner; Turkish: Hemşinliler), also known as Hemshinli or Hamshenis or Homshetsi, are a bilingual ethnographic group of Armenians who mostly practice Sunni Islam after their conversion from Christianity in the beginning of the 18th century and are affiliated with the Hemşin and Çamlıhemşin districts in the province of Rize, Turkey.

They are Armenian in origin, and were originally Christians and members of the Armenian Apostolic Church, but evolved into a distinct community over the centuries and converted to Sunni Islam after the conquest of the region by the Ottomans during the second half of the 15th century. In Turkey, Hemshin people do not speak the Homshetsi dialect apart from the "Eastern Hamsheni" group living in provinces of Artvin and Sakarya and their mother tongue is now Turkish.

Adapazarı (pronounced [ɑˈdɑpɑzɑɾɯ]) is a municipality and the capital district of Sakarya Province, Turkey. Its area is 324 km, and its population 281,489 (2022). It covers the central and northern part of the agglomeration of Adapazarı and the adjacent countryside.