Soltaniyeh

Soltaniyeh is one of the counties of Zanjan province and its center is Soltaniyeh city, which has a distance of 43 kilometers from Zanjan city. Dome of Soltaniyeh and Tomb of Oljaitu are both located in this city. Dome of Soltaniyeh, as an architectural masterpiece of the Islamic era and the tallest brick dome in the world, is registered in the list of World Heritage.