Records of heads of state
Officially, the current Emperor of Japan, Akihito is the 125th in line from the first emperor Jimmu, who is variously believed to have reigned in the 1st or 7th century BC. The earliest documentary evidence is only for the 29th emperor, Kinmei (AD 509–571); however, this is sufficient such that even the most conservative of estimates still places the Japanese imperial family as among the oldest lines in the world today.
Enthronement
This ancient rite was held in Kyoto, the former capital of Japan, until 1990 when the enthronement ceremony for Emperor Akihito took place at the Imperial Palace in Tokyo. The ceremony is not public, and the regalia are generally seen only by the emperor himself and a few Shinto priests. However, an account in "Time" from the enthronement of Akihito's father Hirohito in 1928 reveals a few details. First is a three-hour ceremony in which the emperor ritually informed his ancestors that he had assumed the throne. This was followed by the enthronement itself, which took place in an enclosure called the "Takamikura", which contained a great square pedestal upholding three octagonal pedestals topped by a simple chair. This was surrounded by an octagonal pavilion with curtains, surmounted by a great golden phoenix.