“Known as Seiryu-en or ‘Garden of the Clear Stream,’ the … award-winning garden features a 170-foot stream flowing from a waterfall at the upper reaches of the garden, with blooming trees, foliage, and sounds of cascading water.” Designed by Dr. Takeo Uesugi, the garden received the National Landscape Award from the American Associations of Nurserymen during a White House ceremony — the highest award in the nation for environmental improvement and community beautification. Admission is free, reservations are required.