Each season, more than 222,000 plants change color at The Morton Arboretum–an internationally recognized outdoor tree museum located 25 miles west of Chicago in Lisle, Ill. They originate from 40 countries in the northern hemisphere, which means an exploration of the arboretum's 1,700 acres is like a trip across America, China, and Europe. Throughout the year, scores of tree-focused events, activities, and services for adults, children, and professionals keep nature enthusiasts engaged and educated. The sights along its 16 miles of walking trails and nine miles of roads evolve yearly from rich greens in the spring and summer to a rainbow of yellow, orange, and red in the fall, before clearing its canvas in winter. Seasonal attractions, including Illumination: Tree Lights at The Morton Arboretum, grant guests with a unique, interactive experience that includes dazzling light projections and electric splashes of color. Such events help summon more than 800,000 annual visitors to the grounds and more than 36,000 member households, all of which visit between 7 a.m. and sunset, daily.