Little Hagia Sophia Mosque | Istanbul

The Little Hagia Sophia Mosque, formerly the Church of Saints Sergius and Bacchus, is located in the Sultanahmet district of Istanbul, Turkey.

This structure is a former Eastern Orthodox basilica that was converted into a mosque.

Visual Characteristics

The mosque is constructed primarily from brick and stone. Its central dome, supported by four large piers, measures approximately 17 meters in diameter. The exterior walls are a muted red-brown brick, with arched windows. A single, slender minaret stands to the west of the main structure. The interior features remnants of Byzantine mosaics, including depictions of Emperor Justinian I and Empress Theodora.

Location & Access Logistics

The mosque is situated on the western side of the Sultanahmet Square, approximately 1.5 kilometers southwest of the Hagia Sophia. Access is via the main tram line T1, with the "Sultanahmet" stop being the closest. From the tram stop, it is a 5-minute walk south along Alemdar Caddesi, then turning west onto the smaller street leading to the mosque. Limited street parking is available in the vicinity, but is often occupied. No dedicated visitor parking is provided.

Historical & Ecological Origin

Construction of the church began around 527 AD and was completed in 536 AD, during the reign of Emperor Justinian I. It is attributed to the architects Isidore of Miletus and Anthemius of Tralles, the same architects responsible for the Hagia Sophia. The original purpose was as a monastery church. It was converted into a mosque in 1509 by the Ottoman governor of Egypt, Koca Mustafa Pasha.

Key Highlights & Activities

Visitors can observe the architectural design, including the central dome and the surrounding semi-domes. Examination of the surviving Byzantine mosaic fragments is possible. The mosque is open for prayer services, and visitors can enter outside of these times. Photography is permitted, but respectful attire is required.

Infrastructure & Amenities

Restrooms are available within the mosque complex. Limited shaded areas are present in the courtyard. Cell phone signal (4G/5G) is generally good in the area. No food vendors are located directly at the mosque; however, numerous cafes and restaurants are situated within a 5-minute walk in the Sultanahmet area.

Best Time to Visit

For optimal interior lighting and fewer crowds, visiting between 9:00 AM and 11:00 AM on weekdays is recommended. The mosque is closed to visitors during prayer times. The months of April, May, September, and October offer moderate weather conditions.

Facts & Legends

A local tradition suggests that the church was built to commemorate the survival of Saints Sergius and Bacchus, who were martyred for their Christian faith. It is also said to have served as a model for the larger Hagia Sophia, though this is debated by historians.

Nearby Landmarks

• Hagia Sophia (0.5km Northeast)
• Blue Mosque (Sultan Ahmed Mosque) (0.7km North)
• Basilica Cistern (0.6km North)
• Topkapi Palace (1.2km East)
• Grand Bazaar (1.0km Northwest)