Take a break and swim in the midst of Shinjuku's concrete jungle. The Sky Pool, on the seventh floor of the Keio Plaza hotel's main tower, boasts an impressive view, blue skies and even a little poolside greenery. Prices vary by the hour – it's a bargain to come on weekdays after 3pm and enjoy the pool for ¥4,000. In addition to the main pool, you'll find a circle-shaped pool for kids. Swimsuits can be rented for ¥1,000.
Weekdays ¥5,000 (¥2,500 for children aged 4-12), after 3pm ¥4,000 (¥2,000 for children); weekends, holidays and August 14 & 15 ¥7,000 (¥3,500 for children), after 3pm ¥5,000 (¥2,500 for children).