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.