The US president has warned Iran he will obliterate its cultural sites. Here is our guide to the nation’s jewels, from hilltop citadels to a disco-ball mausoleum

If carried out, Donald Trump’s threat to target “cultural sites” in Iran would put him into an axis of architectural evil alongside the Taliban and Isis, both of which have wreaked similar forms of destruction this century. The Taliban dynamited Afghanistan’s sixth-century Buddhas of Bamiyan in 2001; Isis has destroyed mosques, shrines and other structures across Iraq and Syria since 2014, some in the ancient city of Palmyra. Not, you might have thought, company the US president would prefer to be associated with.

Does Trump know what would be lost? Probably not – but he’s hardly the only one. The fact that the country is rarely visited by western tourists is not due to a lack of attractions. With a civilisation dating back 5,000 years, and over 20 Unesco world heritage sites, Iran’s cultural heritage is rich and unique, especially its religious architecture, which displays a mastery of geometry, abstract design and pre-industrial engineering practically unparalleled in civilisation. This is is not just Iran’s cultural heritage, it is humanity’s.