The Little Hagia Sophia Mosque, also known as Küçük Ayasofya Cami, is a historical mosque located in Istanbul, Turkey. The mosque was originally built as a church in the 6th century CE during the Byzantine era and was known as the Church of Saints Sergius and Bacchus.

The church was converted into a mosque during the Ottoman Empire in the 16th century and was named Küçük Ayasofya Cami, which means “Little Hagia Sophia Mosque.” The mosque features a unique blend of Byzantine and Ottoman architectural styles, with a dome and several smaller domes, minarets, and a spacious courtyard.

The interior of the mosque is adorned with beautiful Islamic calligraphy, geometric designs, and colorful tiles. The mosque has been restored and renovated several times throughout its history, with the most recent restoration taking place in the early 2000s.

Today, the mosque is open to visitors and serves as an important historical and cultural landmark in Istanbul. Its unique architecture and rich history attract tourists and locals alike.