- 54165 Audubon Dr., Sandstone, MN 55072
The Audubon Center of the Woods is a private, non-profit residential environmental learning center (RELC) and green retreat & conference center on Grindstone Lake near Sandstone, MN – 90 miles north of Minneapolis/St. Paul. We offer a great variety of outdoor and environmental education experiences for people of all ages – youth, families and adults – and are an ideal K12 school field trip and student travel destination. In addition to our on-site programs and camps, ACNW provides outreach programs throughout the region. All of our facilities are also available for rental – perfect for hosting your own retreat or conference at our beautiful 535-acre lakeside location.