Kharraqan Towers

The Kharraqan Towers (‌, Borj ha-ye Kharraqan), also known as the Kharrakhan or the Domes of Kharaghan, are a pair of mausolea built in 1067 and 1093 CE, in the Kharraqan region, in Hesar-e Valiyeasr, near Qazvin, Qazvin province, northern Iran. They are notable for being an early example of a geometric ornament, an early example of double domes, and one of the earlier tomb towers that appeared in the Seljuk era during the 11th century. The octagonal brick structures stand 13 metres (43 ft) tall, and each side is 4 metres (13 ft) wide. The surface of both mausolea demonstrate extensive use of geometry. The interior walls of the older mausoleum are decorated with paintings of various subjects. The eastern tower dates from 1067–68, and the western tower dates from 1093.

Building data from Wikidata (CC0); heights normalised. Summary from Wikipedia (CC BY-SA).