Hama Rikyu (浜離宮, Hama Rikyū), is a large, attractive landscape garden in central Tokyo. Located alongside Tokyo Bay, Hama Rikyu features seawater ponds which change level with the tides, and a teahouse on an island where visitors can rest and enjoy the scenery. The traditionally styled garden stands in stark contrast to the skyscrapers of the adjacent Shiodome district.
The garden has served many purposes over the centuries. It was originally built as a feudal lord's Tokyo residence and duck hunting grounds during the Edo Period (1603-1867), but later served as a strolling garden and as an imperial detached palace before eventually being opened to the public in its current form. Vestiges of these old roles are still visible throughout the garden including several reconstructed duck hunting blinds, and the remains of an old moat and reconstructed rock wall.
Hama Rikyu is attractive in any season. Although not as famous for its fall foliage as some of the other gardens around Tokyo, it offers plenty of maple, ginkgo and other trees that show their beautiful autumn colors between late November and early December.
https://www.japan-guide.com/e/e3025.html