The square of the Republic, once known as the Lenin square during the Soviet era. It is said that the underground square is a large bunker that can prevent nuclear radiation and protect important leaders during the Cold War. Yerevan (Armenian: Երևան, paraphrased: Yerevan) is the capital of the Republic of Armenia in the West Asian countries. In the West there are many names such as Erivan, Erebuni, Ereun, and Yerevan. The common names are "Erewan", "Ayrivan", and "Erevan".