Tunis (تونس ) is the capital and largest city of Tunisia. The greater metropolitan area of Tunis, often referred to as "Grand Tunis", has about 2,700,000 inhabitants. , it is the third-largest city in the Maghreb region (after Casablanca and Algiers) and the eleventh-largest in the Arab world.
Situated on a large Mediterranean Sea gulf (the Gulf of Tunis), behind the Lake of Tunis and the port of La Goulette (Ḥalq il-Wād), the city extends along the coastal plain and the hills that surround it. At its core lies the Medina, a World Heritage Site. East of the Medina, through the Sea Gate (also known as the Bab el Bhar and the Porte de France), begins the modern part of the city deemed "Ville Nouvelle", traversed by the grand Avenue Habib Bourguiba (often referred to by media and travel guides as "the Tunisian Champs-Élysées"), where the colonial-era buildings provide a clear contrast to smaller, older structures. Further east by the sea lie the suburbs of Carthage, La Marsa, and Sidi Bou Said.
As the capital of the country, Tunis is the focus of Tunisian political and administrative life and also the center of the country's commercial and cultural activities.
Tunis is the transcription of the Arabic name تونس which can be pronounced as "Tūnus", "Tūnas", or "Tūnis". All three variations were mentioned by the 12th-century Arab geographer Yaqut al-Hamawi in his Mu'jam al-Bûldan (Dictionary of Countries).
Different explanations exist for the origin of the name Tunis. Some scholars relate it to the Phoenician goddess Tanith ('Tanit or Tanut), as many ancient cities were named after patron deities. Some scholars claim that it originated from Tynes, which was mentioned by Diodorus Siculus and Polybius in the course of descriptions of a location resembling present-day Al-Kasbah, Tunis's old Berber village.
Another possibility is that it was derived from the Berber verbal root ens which means "to lie down" or "to pass the night". The term Tunis can possibly mean "camp at night", "camp", or "stop", or may have referred to as "the last stop before Carthage" by people who were journeying to Carthage by land.