Home » Facts Building made of Extinct Wood The cabin at Pfeiffer Nature Center is made entirely of American Chestnut, which is now extinct. in Hiking Email this page Travel Guide It's a full 56-page comprehensive guide, highlighting the activities and attractions in our County and it's FREE!! View the visitor's guide online or request that the Enchanted Mountains guide be snail mailed to you for FREE! Related Events Earth and Arbor Day Celebration at Allegany State Park Allegany State Park GeoBash 2019 Pfeiffer Fido Easter Egg Hunt for Doggies Art and Conservation at Pfeiffer Nature Center Easter Celebration at Allegany State Park