Baekje-do

Baekje (백제 百濟 Baekje, "White House"), officially Baekje Prefecture (백제도 百濟都 Baekje-do) is one of the fifteen prefectures of Jimin, and is both the capital and most populous city of Jimin. The Greater Baekje Area is one of the most populous metropolitan areas in the world, with the urban area including areas in the Dataeye and Jongseom collectivities. It is the seat of the Emperor of Jimin and the Jimin government. Baekje is bordered on the south and east by the Jongseom Collectivity and on the north and east by the Dataeye Collectivity. Formerly known as Je-do ("House Prefecture", "Seat of the Government"), it has been the de jure seat of government since 18 BCE, with the foundation of modern-day Jimin by the first Emperor.

Baekje is often referred to as a city, but is officially known and governed as a "prefecture" or "metropolitan collectivity", which combines elements of a city and a collectivity, a subdivision style that it shares with three other prefectures in Jimin. The Baekje metropolitan government administers the 25 districts of Baekje (each governed as an individual city), which cover the area that is the Prefecture of Baekje.