Sultaniyeh is a historical city in northwestern Iran, known for its rich cultural heritage and architectural significance. It was established in the 13th century and served as the capital of the Ilkhanate dynasty. The city is famous for its stunning monuments, particularly the Tomb of Oljaytu, which showcases exquisite tile work and is a UNESCO World Heritage Site. The city played a crucial role in the development of Persian architecture and art during its peak. Today, Sultaniyeh attracts visitors interested in history and architecture, offering a glimpse into the grandeur of the Ilkhanate period and the evolution of Persian culture.