A sacred tree is a tree which is considered to be sacred, or worthy of spiritual respect or reverence. Such trees appear throughout world history in various cultures including the ancient Greek, Hindu mythology, Celtic and Germanic mythologies. They also continue to hold profound meaning in contemporary culture in places like Japan (shinboku), Korea (dangsan namu), India (bodhi tree), and the Philippines, among others. Tree worship is core part of religions which include aspects of animism as core elements of their belief, which is the eco-friendly belief that trees, forests, rivers, mountains, etc have a life force ('anime' i.e. alive) and need to be conserved and used in a sustainable manner.