Arg-e Bam - Bam, Kerman

Arg-e Bam, or the Bam Citadel, located in the Iranian city of Bam in Kerman province, is the largest adobe building in the world.

The historical landmark dates back to around the 6th-4th centuries BC and even earlier.

Located in the middle of a trade-route, the citadel was a major stop for traders in central Asia.