Take a break and swim in the midst of Shinjuku's concrete jungle. Prices vary by the hour – it's a bargain to come on weekdays after 5pm and enjoy the 7th-floor 'Sky Pool' for only ¥1,200. Ladies get half off (¥2,000) and a free mini bottle of body lotion from L'Occitane every Tuesday (except for Aug 11). See, you don't need to leave the city to take a (mini) vacation.
Admission: From 9am: adults ¥4,000 (Sat, Sun and public holidays ¥6,000), children ¥2,000 (Sat, Sun and public holidays ¥3,000); from 3pm: adults ¥2,400 (Sat, Sun and public holidays ¥3,600), children ¥1,200 (Sat, Sun and public holidays ¥1,800); from 5pm: adults ¥1,200 (Sat, Sun and public holidays ¥1,800), children ¥600 (Sat, Sun and public holidays ¥900)