Kok Gumbaz Mosque, also known as the Blue Dome Mosque, is an architectural marvel situated in Istaravshan, a city in the Sughd province of Tajikistan. This historical mosque dates back to the 16th century, built under the order of Abdullatif Sultan, son of the Timurid ruler Ulugh Beg. The mosque is part of a larger complex that includes a madrasah and a mausoleum, serving as a hub of Islamic learning and culture in the region. The name 'Kok Gumbaz' translates to 'Blue Dome,' derived from the distinctive blue-tiled dome that crowns the mosque, which is an excellent example of Timurid architectural style. Despite its age, the structure has retained much of its original splendor, thanks to restorations. The mosque compound features intricate geometric patterns, calligraphy, and a serene courtyard bordered by iwans (porches) with pointed arches, establishing a tranquil atmosphere for both pilgrimage and study. The mosque is not only a place of worship but also a significant historical site, attracting tourists who are interested in the rich cultural tapestry of Central Asia.