There’s a lot more to Tokyo parks than just Yoyogi and Shinjuku-gyoen. Kasai Rinkai Koen is a seaside park on the edge of Tokyo Bay between Odaiba and Tokyo Disneyland. It’s the largest park in central Tokyo, and is home to an excellent bird sanctuary. There’s also an aquarium, acres and acres of grounds to stroll in, and a huge field of poppies that blooms around Golden Week.
From Tokyo Station, take the Keiyou (not the Keio) Line to Kasai Rinkai Koen Station. It takes about 15 minutes and costs 210 yen. The park is just a one-minute walk from the station.
Tel. (03) 5696-1331
Website: http://www.tokyo-park.or.jp/park/format/index026.html (In Japanese only)