Rumania City is a term used to refer to two of the largest cities in Romania: Arad and Iasi. Arad is a city located in the western part of Romania, on the Mures River, and is the capital of Arad County. It has a population of around 175, 000 people. Iasi is the second largest city in Romania, located in the northeastern part of the country, and is the capital of Iasi County. It has a population of around 300, 000 people. Both cities are important cultural and economic centers in Romania.