M. R.: Two minutes from JR Komagome station, this historic garden is especially beautiful in Autumn time with its colourful foliage. From late November, the trees are lit-up at night. YEN 300 entrance fee.
Jay S: Probably the most beautiful park in Tokyo. Several styles of landscapes from british, to french to the typical japanese one with cute bridges and a big pond. It's worth the 200¥ entrance.