The Topkapi Palace

 An imperial aigrette.

 Enameled and diamond  studded dagger. 

The Holy Relics of Islam

The Holy Relics of Islam brought from Egypt early in the 16th century after the capture of that land by the Ottoman Empire have since then been kept inside a sanctuary in The Topkapi Palace.
The conquest of Egypt had passed the title of Caliph to the Ottoman Sultans, thus increasing the power of the Ottoman throne. The Holy Relics that served in part as the symbols of such power include some personal articles and garments of the Prophet Mohammed, one of the oldest manuscript copies of the Koran and the keys to the Kaaba. Apart from their religious significance, all these items also are prominent as works of art.

Islamic Relics : Exterior view inside the 3rd courtyard.