Emir Sultan Mosque is a historically significant mosque in Bursa, Turkey, named after Emir Sultan (1368–1429), a dervish and scholar from Persia who became a close ally and son-in-law of the Ottoman Sultan Bayezid I. This mosque and its adjacent complex, comprising a madrasah, a hammam, a soup kitchen, and a tomb (türbe), are nestled in the serene foothils of Mount Uludağ. Overlooking the city, its tranquil location offers visitors a place for contemplation and prayer. The mosque has been rebuilt several times due to earthquakes, the most recent of which occurred in the 19th century, giving the mosque its current late-Ottoman architectural character with a mixture of Baroque and classical Ottoman elements. The interior is adorned with elegant calligraphy and decorative tile work, creating a sacred and peaceful ambiance. The mosque's courtyard is an inviting space where locals and tourists alike can absorb the spiritual atmosphere and reflect on the rich heritage of Bursa, a key city in the early history of the Ottoman Empire. The complex around the mosque also includes Emir Sultan's tomb, a frequently visited pilgrimage site.