
In ancient times, eternal flames were fueled by wood or olive oil modern examples usually use a piped supply of prop ane or natural gas. Today, there are still eternal flames maintained all throughout the world.

The New Fire ceremony (in Nahuatl xiuhmolpilli-the Binding of the Years) was an Aztec ceremony performed once every 52 years and it is thought that the fire was relit using friction and some say it was performed on top of the person being sacrificed.(How true that is, I don't know.and no I won't be proving that legend!) In ancient Ireland it is said that a sacred fire was kept ever burning on a shrine at Kildare, in Ireland, and attended by virgins of high rank, called ' inghean au dagha,' and again if the fire ever went out it had to be lit using friction. It is said that if the flame ever went out it was re-kindled from friction fire, and laurel and ivy were thought to have been used. Source: The sacred fire of Vesta was a sacred eternal flame in Ancient Rome. The runners would run all city-states of Greece carrying the message to stop any war fight as the Olympic Games were about to start and inviting all athletes to take part. In the ancient times, it was thought that the Olympic Flame was sent by the gods who favored the games. The Olympic Flame is lit during all the days of the Olympics and is extinguished in the closing ceremony. The final runner enters the stadium where the opening ceremony of the Olympics is held and lights a giant torch. It is thought as a great honor to carry the torch with the Olympic Flame, which symbolizes the peace around the universe. Then she passes the torch to the first runner and usually a route around the world starts that passes through many capitals and finishes in the town which hosts the Olympics. The chief-priestess lights the torch with the use of a parabolic mirror that concentrates the light of the Sun.

Eleven women dressed in ancient Greek robes represent the priestesses and perform the ceremony. The lighting of the Olympic flame is held several months before the beginning of the Olympics in the actual site of Olympia, near the temple of Hera.

Even today, this ritual has been continued and indicates the starting of the preparation of each Olympic Game. Ancient Olympia, the original site of the ancient Olympic Games. This photo shows The Olympic Flame lighting ceremony for Pyeongchang 2018 Olympics, in Olympia Greece, Peloponnese. The Olympic Torch is just one example of the living flame that has survived to modern times. When new “subdivisions” were developed, fire was carried from the town’s hearth to light the fire of the new community, assuring its prosperity (see here for more. In Ancient Greece, the living flame of Hestia was tended constantly and never allowed to die out, for it represented the energy of all life and to let the flame extinguish was to invite a cold and barren existence.
