Indonesia has a population of 248 million and is home to the world's largest Muslim population. Papua province is located in eastern Indonesia and is inhabited by ethnic groups like the Korowai people, who are known for building tree house structures up to 45 meters high. These tree houses provide protection from floods, animals, other tribes, and mosquitoes below, while also warding off unwanted visitors. They are constructed using materials found in the forest, with a central banyan tree pole and branches to form the frame and floor.