Iran also called Persia, is a vast country in Western Asia. It is the most important country in Middle East. With an area of 1,648,195 km², it is considered as the second largest country in this region. Iran is home to one of the oldest civilization of the world. With a long history, it had one of the first eldest empire, Achaemenid Empire, that ruled over a vast area of the world. Iran as a vast and beautiful country welcomes all travelers. Read about Iran Historical Sites in Iran Sun World website. Enjoy traveling to Iran, by Sun World, an Iranian Tour & Travel Agency.