The Sinan Pasha Mosque is an Ottoman-era mosque located in the city of Kastamonu, Turkey. Built in the 16th century, it was commissioned by Sinan Pasha, a prominent military leader and statesman. The mosque features a classic Ottoman architectural style, characterized by its large dome and elegant minaret. Inside, the mosque is adorned with intricate tile work and calligraphy, reflecting the artistic achievements of the period. The surrounding courtyard provides a peaceful space for visitors, making it a significant cultural and historical landmark in the region.