Rayen Castle is an adobe castle in 100 Kilometers south of Kerman province , Iran . It is situated on the skirts of the mountain Haraz . The medieval mudbrick city of Rayen is similar to the Arg-e Bam city which was destroyed in an earthquake in December 2003 . Rayen displays all the architectural elements of a deserted citadel . It is extremely well preserved , despite numerous natural disasters that have destroyed similar structures nearby , and it is one of the most interesting sites in Iran .
Rayen Castle was inhabited until 150 years ago and , although believed to be at least 1,000 years old , may have foundations from the pre-Islamic Sassanid era . According to the old documents , it was situated on the trade route , and was one of the centres for trading valuable goods and quality textiles . it was also a centre of sword and knife manufacturing , and later on , also guns.existence of a waterfall near the city , the Haraz mountain with 4501 meters of altitude , several fruit gardens , the mines of green and pink marble , Sodium Solphate , and several thermal springs , it's become and attractive touristic destination . During the reign of third Yazdgerd , the Sasanid King , Arabs could not conquer this city thanks to its high walls supporting the counterparts of the city .
