The National Arboretum is a 446 acre living museum where trees, shrubs, and herbaceous plants are cultivated for research and education. This 9.6 miles of winding roadways was established in 1927 by an Act of Congress and has over half a million visitors each year! The arboretum is abundant with flora, featuring a Perennial Collection of day lillies, daffodils, and peonies tucked among the National Boxwood Collection, a Grove of State Trees like the Georgia live oak, the Alaskan Sitka spruce, and the Nebraskan eastern cottonwood, and the Asian Collections with 13 acres of witch hazels, Japanese apricots, and camellias. Be sure to look at the National Arboretum website before planning your visit- it features lists of what is blooming each month!