Shinjukugyoen is a 145-acre oasis in metropolitan Tokyo. It was originally built in 1906 as an exclusive garden for the imperial family. It became a public park after World War I - See more at: http://www.livinglanguage.com/blog/2013/03/29/celebrate-take-a-walk-in-the-park-day/#sthash.VGx1wCQE.dpuf