Celebrate 150 years of loving nature with us! Dont miss out on this historic celebration and help us kick off the next 150 years of being here for nature. Saturday, October 19, 10 AM-3 PM It's exactly what it sounds like! Join us for the Big Birthday Block Party. Enjoy free admission, the membership deal of the century, our newest exhibits, a sneak preview of our Paleo Center, food, music, and more!