Built exclusively for the Imperial family almost 100 years ago, has been a favourite retreat for Tokyoites since the end of the second world war. It closes a little early, at 4 pm, but is a world away from the concrete jungle that encloses it. Admission is 200 yen for adults.
Take the metro to Shinjuku Gyoen-mae station; www.shinjukugyoen.go.jp/
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