The Olympic Games ceremonies of the Ancient Olympic Games were an integral part of these Games; the modern Olympic games have opening, closing, and medal ceremonies. Some of the elements of the modern ceremonies date back to the Ancient Games from which the Modern Olympics draw their ancestry. An example of this is the prominence of Greece in both the opening and closing ceremonies. During the 2004 Games, the medal winners received a crown of olive branches, which was a direct reference to the Ancient Games, in which the victor's prize was an olive wreath. The various elements of the ceremonies are mandated by the Olympic Charter, and cannot be changed by the host nation. This requirement of seeking the approval of the International Olympic Committee (IOC) includes the artistic portion of opening and closing ceremonies. The ceremonies have evolved over the centuries. Ancient Games incorporated ceremonies to mark the beginning and ending of each successive game. There are similarities and differences between the ancient Olympic ceremonies and their modern counterparts. While the presentation of the Games has evolved with improvements in technology and the desire of the host nations to showcase their own artistic expression, the basic events of each ceremony have remained unchanged. The presentation of the Opening and Closing Ceremonies continue to increase in scope, scale, and expense with each successive celebration of the Games, but they are still steeped in tradition. Ancient forerunners The Ancient Games, held in Greece from ca. 776 BC to ca. 393 AD, provide the first examples of Olympic ceremonies. The victory celebration, elements of which are in evidence in the modern-day medal and closing ceremonies, often involved elaborate feasts, drinking, singing, and the recitation of poetry. The wealthier the victor, the more extravagant the celebration. The victors were presented with an olive wreath or crown harvested from a special tree in Olympia by a boy, specially selected for this purpose, using a golden sickle. The festival would conclude with the victors making solemn vows and performing ritual sacrifices to the various gods to which they were beholden. There is evidence of dramatic changes in the format of the Ancient Games over the nearly 12 centuries that they were celebrated. Eventually, by roughly the 77th Olympiad, a standard 18-event program was established. In order to open a Games in ancient Greece the organizers would hold an Inauguration Festival. This was followed by