Today, April 22, 2015, is Earth Day and throughout the day Curbed is going to be bringing you news from the worlds of sustainable design, architecture and general innovation awesomeness.
Pennsylvania's Longwood Gardens was once the private home and garden of noted American businessman Pierre Du Pont, and the property was already rich in trees since the previous owners, Joshua and Samuel Peirce, planted an arboretum on the property in 1798. In 1946, DuPont turned the land over to a foundation and Longwood opened to the public, now attracting nearly a million visitors each year. They've got a massive Christmas display during the holidays, special installations by world-renowned artists, Bonsai trees galore, and some killer (and spectacularly eco-friendly) pipes. The garden's public restrooms, spotlighted in this episode of Golden Thrones, feature the largest green wall in North America, boasting "over 47,000 different types of plants."