The mosque is built on the site of an earlier structure, with some elements repurposed from Byzantine ruins.
It features a unique flat-roof design compared to the more common high-dome style of later Ottoman mosques.
The Pervane Tomb, located in the courtyard, houses the remains of the powerful Seljuk vizier Pervane Muinüddin Süleyman, who played a key role in Sinop's administration.
The mosque is part of a larger religious and educational complex (külliye) reflecting the social structure of 13th-century Islamic cities.
The Alaaddin Mosque is a historic Seljuk-era structure located in the heart of Sinop, commissioned by Sultan Alaaddin Keykubat I following the conquest of the city in 1214. The mosque features a distinctive rectangular plan characterized by its multiple domes and robust stone masonry typical of 13th-century Anatolian architecture. It sits within a complex that includes an attached madrasa and the tombs of Pervane Muinüddin Süleyman, a prominent statesman of the Seljuk Sultanate. The interior is noted for its simple, austere decoration, reflecting the functional and religious priorities of its original builders. Over the centuries, the mosque has undergone several renovations, most notably during the Ottoman period, which integrated later architectural elements into the Seljuk frame. It remains an active place of worship serving the local community in Sinop’s city center. The courtyard contains historic tombstones and provides a quiet transition from the busy urban surroundings.
From the center of the courtyard looking toward the main entrance, capturing the contrast between the stone facade and the minaret.
Remove your footwear at the entrance and use the provided shelves before entering the prayer hall.
Visit during non-prayer times to ensure you have quiet space for observation without interrupting worshippers.
Explore the surrounding courtyard area to view the historical funerary architecture of the Pervane tomb.
Do not walk directly in front of those engaged in prayer or take photos of worshippers without permission.
Visitors must dress modestly, covering shoulders and knees; women should bring a headscarf to cover their hair while inside the prayer area.
