Arg-e Rayen.

Rayen Castle (Persian: ارگ راين‎ Arg-e Rāyen) is an adobe castle in Kerman province, Iran. 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.