Tunisia (US ⁱ/tuːˈniːʒə/ two-NEE-zhə or UK /tjuːˈnɪziə/ tew-NIZ-iə; Arabic: تونس‎ Tūnis pronounced [ˈtuːnɪs]), officially the Tunisian Republic (Arabic: الجمهورية التونسية‎ al-Jumhūriyyah at-Tūnisiyyah), is the northernmost country in Africa. It is an Arab Maghreb country and is bordered by Algeria to the west, Libya to the southeast, and the Mediterranean Sea to the north and east. Its area is almost 165,000 square kilometres (64,000 sq mi), with an estimated population of just under 10.7 million. Its name is derived from the capital Tunis located in the northeast.

Tunis (Arabic: تونس‎ Tūnis) is the capital of both the Tunisian Republic and the Tunis Governorate. It is Tunisia's largest city, with a population of 728,453 as of 2004; the greater metropolitan area holds some 2,412,500 inhabitants.

Situated on a large Mediterranean Sea gulf (the Gulf of Tunis), behind the Lake of Tunis and the port of La Goulette (Halq al Wadi), the city extends along the coastal plain and the hills that surround it. At the centre of more modern development (from the colonial era and later) lies the old medina. Beyond this district lie the suburbs of Carthage, La Marsa, and Sidi Bou Said.

The medina is found at the centre of the city: a dense agglomeration of alleys and covered passages, full of intense scents and colours, boisterous and active trade, and a surfeit of goods on offer ranging from leather to plastic, tin to the finest filigree, tourist souvenirs to the works of tiny crafts shops.

Just through the Sea Gate (also known as the Bab el Bahr and the Porte de France) begins the modern city, or Ville Nouvelle, transversed by the grand Avenue Habib Bourguiba (often referred to by popular press and travel guides as "the Tunisian Champs-Élysées"), where the colonial-era buildings provide a clear contrast to smaller, older structures. As the capital city of the country, Tunis is the focus of Tunisian political and administrative life; it is also the centre of the country's commercial activity. The expansion of the Tunisian economy in recent decades is reflected in the booming development of the outer city where one can see clearly the social challenges brought about by rapid modernization in Tunisia.

Sidi Bou Said (Arabic: سيدي بو سعيد‎) is a town in northern Tunisia located about 20 km from the capital, Tunis.

The town got its name for a Muslim religious figure who lived there, Abou Said ibn Khalef ibn Yahia Ettamini el Beji (before he came along, it was called Jabal el-Menar). The town itself is a tourist attraction as it is known for the extensive use of blue and white colors all over the town. All kinds of souvenirs (some not even remotely connected to Sidi Bou Said and sometimes not to Tunisia itself) can be bought in the main street. While staying in Sidi Bou Said for a few days is not common, tourists from Hammamet and other tourist towns usually come to Sidi Bou Said. It can be reached by a TGM train, which runs from Tunis to La Marsa.