Three Pillars mushroom cabins are constructed from hardwood trees and each one is different. Mushrooms can take one to three years to grow based on environmental conditions. Mushroom Cabin #2 is constructed of Maple and supports reishi, chestnut, and oyster mushroom spores. Reishi mushrooms are among several medicinal mushrooms that have been used for hundreds of years, mainly in Asian countries, for the treatment of infections. More recently, they have also been used in the treatment of pulmonary diseases and cancer. Chestnut mushrooms may possess immune-boosting and antibacterial properties. They contain vitamins and minerals, including vitamins B2, B3, B5, biotin, potassium, selenium, copper, and folate.