Kursum Mosque, Ottoman mosque in Karlovo, Bulgaria

The Kursum Mosque is a place of worship in Karlovo featuring traditional Ottoman design with a central dome and minaret on a rectangular plan. The interior follows classical Ottoman proportions with dedicated areas for prayer and devotion.

The building was constructed in 1485 by Karlu Ali Bey during Ottoman rule and remains Karlovo's oldest standing monument. Its foundation marked an early phase of Ottoman urban development in the region.

The mosque is inactive and not used for worship; it has served as a warehouse and is now intended for museum purposes. Its name comes from the Turkish word for lead, referring to the original lead roof. The surrounding area once held a cemetery, a market, and a large hammam.

The mosque stands in Demokratia Park at the corner of General Gurko Street and General Kartsov Boulevard, in central Karlovo. It is an inactive mosque, not a working worship site, and has served as a warehouse; it is not open to visitors as a mosque. The building is a protected cultural monument awaiting museum adaptation, so check locally before planning a look at the exterior.

The name comes from the Turkish word for lead, a material used in the original roof construction. This feature made the building notable during the early Ottoman period in the region.