Shinjuku Gyoen National Garden is the most beautiful. As you walk ,you can be sure to hit all the major gardens: English Landscape, French Formal, Japanese Traditional (with teahouse) and the curiously named Mother and Child Forest (Haha to Ko no Mori). There's also a lovely Taiwan Pavilion; go inside and look out the second-story windows.                       Shinjuku Gyoen is constructed on the site of the private mansion of the Naito family of feudal lords associated with the Takato domain in Shinano province during the Edo period (1603–1868). Part of the land was converted to an agricultural testing site and later managed as an imperial estate following the Meiji Restoration (1868). Shinjuku Imperial Botanical Garden was completed in 1906 and opened to the public after World War II as Shinjuku Gyoen National Garden.