: Many "old" mosques, such as the 700-year-old Ertuğrul Gazi Mosque , have undergone renovations that added these iconic gilded crescents to their domes, blending centuries of tradition with symbolic toppers.
: While many associate domes with Islam, they were common in Roman and Byzantine architecture (like the Hagia Sophia). However, the Dome of the Rock in Jerusalem, built in 691 AD, is the world's oldest surviving work of Islamic architecture, establishing the dome as a central feature of the faith.
: In a mosque, the dome is often viewed as a symbolic representation of the vault of heaven , reminding worshippers of the divine presence during prayer.