The Kharraqan towers are mausoleums, built in 1093 CE and 1067 CE, located on the plains in northern Iran, near Qazvin.
The brick structures stand 15 meters tall and 4 meters wide, and make extensive use of geometry. Inside the older mausoleum there is a lamp and paintings.
The eastern tower dates from 1067-1068CE, while the western tower dates from 1093. Both towers appear to be the work of the architect, Muhammad bin Makki al-Zanjani. It is believed that the occupant of the eastern tower was Abu Sa'id Bijar and the occupant of the western tower was Abu Mansur Iltayti.
These towers are remnant examples of architecture that existed during the Seljuk period of medieval Persia.
Both towers were significantly damaged by the 2002 Bou'in-Zahra earthquake. These were in a good state of preservation prior to the rupture, suggesting it was one of the most powerful quakes in the region for approximately 900 years.