Apart from the Harem, don’t miss the Imperial Treasury, which holds royal artifacts like the Sword of Osman and the Topkapi Dagger, precious gemstones like the famous Spoonmaker’s Diamond, and priceless works of art and gifts collected by the Ottoman Sultans. Other must-see attractions include the European Porcelain collection, the arms and weaponry exhibit, the Library of Sultan Ahmed III with rare manuscripts and beautifully illuminated Qurans, the Sacred Relics Room, which holds some artifacts of Prophet Mohammad, and the pavilions in the fourth courtyard.