Eorzea – Hydaelyn

The Source, also known as Hydaelyn (ハイデリン, Haiderin?), is the primary setting of Final Fantasy XIV.
The world of Hydaelyn is made up of several landmasses, the largest of which are Aldenard, Ilsabard, Othard, Meracydia, and Tural, known as the “New World” to Eorzeans. Only the realms of Eorzea, the Old World, and the Far East have been completely revealed through the use of maps.
The planet has had two artificial satellites: the red moon Dalamud, and silver moon Menphina, often referred to simply as “the moon”.

The vast realm of Eorzea, comprising the continent of Aldenard and its outlying islands, has seen the rise of a civilization with peoples as diverse as its environs. Throughout its history, the landscape has played home to a number of city-states—the tenuous relations among them fluctuating between friendly and hostile.

For more information, see The Source (Final Fantasy XIV) on the Final Fantasy fandom Wiki.