Oblivion:Cyrodiil

Cyrodiil, also known as the Imperial Province, is a province in the south-central region of Tamriel, and the home of a humanoid race known as Imperials. The center of their Empire and seat of governance, Cyrodiil is also known as "the Heartland". The capital of Cyrodiil, and of the whole empire, the Imperial City, is located on an island in the center of the province, which bears the location of White Gold Tower, possibly the most renowned monument of Tamriel. Despite some accounts describing Cyrodiil as a jungle, it has primarily a temperate climate. Some attribute the discrepancy to the apotheosis of Emperor Tiber Septim.

Color-coded map of the Regions in Cyrodiil

Map of Cyrodiil showing all locations from TESIV