The Windows
The 40 windows at the base of the dome let in natural light and make the dome look as if it is floating.
The inside of Hagia Sophia is one of the most impressive interiors in the world. It combines huge architectural forms with fine details from both the Byzantine and Ottoman periods. Here are the main things you should look for during your visit.

The dome is Hagia Sophia's most famous feature. Rising 56 meters high, it was one of the greatest engineering achievements of its time.

The 40 windows at the base of the dome let in natural light and make the dome look as if it is floating.
Look at the corners under the dome to see the large angel figures.
The dome is supported by pendentives and semi-domes, which help spread the weight and support the main structure.

The mosaics are some of the most famous parts of Hagia Sophia. Many of them are found in the Upper Gallery.
This mosaic shows Jesus Christ with the Virgin Mary and John the Baptist. It is known for the strong facial expressions of the figures.
This large mosaic stands in the apse and looks over the interior.
This mosaic shows Christ with Emperor Constantine IX and Empress Zoe.
This mosaic shows the Virgin Mary with Emperor John II Comnenus and Empress Irene.
When Hagia Sophia became a mosque, new Islamic features were added to the building.

These huge round panels show the names of Allah, Prophet Muhammad, and the first caliphs.
This prayer niche points toward Mecca and was added during the Ottoman period. It shows how Hagia Sophia was adapted for Islamic worship.
This decorated pulpit was used for sermons and shows Hagia Sophia's role as a mosque. Its design reflects Ottoman craftsmanship.
This private area was used by Ottoman sultans during prayer. It allowed them to attend religious services safely and comfortably. The structure shows how the building was adapted for imperial use.
The four minarets were added during the Ottoman period. They changed the skyline of Hagia Sophia and made it recognizable from far away. Today, they are one of the building's most iconic features.

Because there are not many signs inside, many visitors miss important details.
A guide can explain the meaning of the mosaics, calligraphy, and architectural details.
If you prefer to visit on your own, use a digital audio guide to understand what you are seeing.
Start at the Imperial Gate, move through the main nave, look up at the dome, then go to the Upper Gallery to see the mosaics before returning to the exit.
Visit the Upper Gallery early in the morning or later in the afternoon for a quieter experience.
One of the best places for photos is the center of the Upper Gallery.