JapanTOKYO SUMMERLAND GREAT JOURNEY/ADVENTURE LAGOON (western Tokyo): ends Sept. 30, 10 a.m.-5 p.m. weekdays, 9 a.m.-6 p.m. weekends and Japanese holidays; this outdoor waterpark has pools, waterslides and tubes, waterfalls and more in a tropical atmosphere; admission for Summerland (including Adventure Lagoon) is 3,500 yen adults, 2,500 yen children and a one-day pass including swimming pool/unlimited rides in amusement park is 4,500 yen, 3,000 yen children, 2,000 yen infants & seniors; 600 Kamiyotsugi, Akiruno-city, Tokyo; 0.5 km from Akiruno I.C., Ken-o-do Expressway; 042-558-6511; www.summerland.co.jp/index.html.

TOSHIMAEN SWIMMING POOL (Tokyo): July 9 & 10; Outdoor waterpark at Toshimaen amusement park has a giant complex of waterslides called Hydro Polis, and seven different types of swimming pools, a diving pool with 1- and 3-meter diving boards and a 50-meter pool for competitive swimmers; summer one-day pass swimming pool/unlimited rides in amusement park: 4,300 yen adults, 3,300 yen children A (height of 110cm or greater), 2,500 yen for children B (height less than 110cm)/swimming pool pass: 3,800 yen adults, 2,800 yen children A, 1,800 yen children B; 3-25-1 Kouyama, Nerima-ku, Tokyo; Toshima-en Station, Seibu Ikebukuro Line; 03-3990-8800.

OISO LONG BEACH (Kanagawa prefecture): ends Sept. 11, 9 a.m.-5 p.m.; Oiso Prince Hotel’s swimming pools along the coast of Sagami Bay; one-day pass: 3,500 yen adults, 2,500 yen junior high/high school students, 2,000 yen elementary school students, 1,000 yen ages 3-6 and after 2 p.m. it is 2,500 yen, 1,500 yen, 1,000 yen and 500 yen for each; 546 Kokufu Hongo, Oiso Town, Naka-gun, Kanagawa Prefecture; free shuttle from Oiso Station, JR Tokaido Line; 0463-61-1111.

YOMIURI LAND WATER AMUSEMENT ISLAND WAI (Tokyo): July 8-22 weekdays, 10 a.m.-5 p.m., weekends, 9 a.m.-5 p.m, closed July 12; outdoor water park with three different types of slides, including the Giant Sky River — a huge complex of slides — also diving boards, swimming pool, wave pool, children’s pool and 250-meter whirlpool; summer one-day pass (swimming pool/amusement park/unlimited ride in amusement park/seal show): 4,500 yen adults, 3,500 yen children/swimming pool pass: 2,800 yen adults, 1,800 yen children, 500 yen for night swimming, 5-9 p.m.; 4015-1, Yanokuchi, Inagi City, Tokyo; 5 km from Chofu I.C., Chuo Expressway; 044-966-1111; www.yomiuriland.co.jp/english/wai/index.html.

SEIBU-EN SWIMMING POOL (Saitama prefecture): July 9-10, July 16-Aug. 31, 9 a.m.-5 p.m.; water slides. wave pool, floating pool and children’s pool; 2,000 yen adults, 1,000 yen children (1,000 yen adults, 500 yen children July 10-11); 2964 Yamaguchi, Tokorozawa-city, Saitama Prefecture; Seibu Yuenchi Station, Seibu Line; 04-2922-1371.

TOBU DOBUTSU KOEN (ZOOLOGICAL PARK) SUPER POOL (Saitama prefecture): July 9-Sept. 4, 9:30 a.m.-5:30 p.m. weekdays, 9:30 a.m.-6 pm. weekends; Outdoor waterpark has two different types of water sliders, including a huge and snaky complex called Super Slider, and a wave pool, children’s pool and a whirlpool; one-day pass (swimming pool/amusement park/unlimited ride in amusement park): 4,800 yen adults, 3,700 yen children/swimming pool pass: 2,000 yen adults, 1,000 yen children; 110, Suka, Miyashiro-machi Minami Saitama-gun, Saitama; 7.0 km from Kuki I.C., Tohoku Expressway; 0480-93-1200.

KODOMONO KUNI SWIMMING POOL (Yokohama): July 16-Aug. 30,10 a.m.-4 p.m., closed on Wed. (open on Aug. 17); Water slides and tubes, children’s pool and 25m pool for swimmers at Kodomono Kuni — a natural hiking field and playground in Tama hilly terrain; 1,100 yen adults, 450 yen elementary and junior high school students, 350 yen ages 3-5; 700 Nara-cho, Aoba-ku, Yokohama City.

SHOWA KINEN PARK RAINBOW POOL (western Tokyo): July 16-Sept. 4, 9:30 a.m.-6:30 p.m., on weekdays in July, 9:30 a.m.-5:30 p.m.; the largest in the metropolitan area; 2,200 yen adults, 1,200 yen elementary and junior high school students, 300 yen ages 4-5, after 2 p.m., 1,100 yen, 600 yen and 150 yen for each; 3173 Midori-cho, Tachikawa City, Tokyo; Nishi-Tachikawa Station, JR Ome Line; 042-528-1751; www.showakinenpark.go.jp/english/index.htm.

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