In summer, Yomiuriland amusement park opens its five outdoor pools for some wet and wild fun. You can pretend you’re swimming in a particularly choppy sea in the giant wave pool, which boasts relaxing beach vibes, or hurl yourself down one of three different slides. The Giant Sky River may feel a bit intimidating as your scale its stairs, but it is undoubtedly the highlight for thrill-seekers: the 25m-high and 386m-long mega-slide is navigable only with the reassuring presence of a large rubber float.
Kids will love the adorable Soreike Anpanman pool, which features the rosy-cheeked heroes of the popular picture book series.
It's possible to buy tickets on the day, but it's cheaper if you book in advance online. Note that tattoos, including fake ones, are prohibited at Pool WAI.