The complex of astronomy and planetarium of Khayyam is one of the largest scientific and tourism projects in Nishapur, Iran. It is the largest planetarium of the Middle East. The Aflak Cultural Complex of Khayyam with an area of 2,888 square meters includes 2,800 square meters of enclosed roof, 37 square meters of side porch, 52 square meters of console, the entrance of the building and the entrance that is constructed in three floors. The dome of Khayyam facade is 23 meters in diameter and has a capacity of 300 to 350 people. The library's infrastructure is 3,600 square meters. The sky, constellations and stars are displayed in a spherical ceiling by using spotlights and lenses in this place and excellent images of stars are erected in special effects so that the audience feels completely the infinity of the sky. The existence of this planetarium in Nishapur is another reason why this city is one of the most visited tourist destinations in Iran. If you want to see the world of stars in Nishapur, you should go to the planetarium of Khayyam and take Iran tour package through Alaedin Travel.