Luminaire, formally the Federal City of Luminaire, is the capital of the Republic of Atlion. It was first settled by French settlers exploring the Dentele River in June 1586. It was formally designated the national capital by the National Capital Act of the Senate in 1800, as a compromise between Port James and Northridge. Luminaire had an estimated population of 2,686,440 in 2012, the twelfth-largest city in Atlion. The Greater Luminaire Area, the metropolitan area including the federal district, is one of the largest metropolitan areas in the country.