Turn your backyard into the ultimate adventure zone with this Costway Inflatable Kids Hippo Bounce House Slide Climbing Wall & Splash Pool - now only $188.99 (was $439!) at Walmart. On sale this week.

We are a team from Cambodia, and over 95 days we built a full underground water slide park inside a secret temple-style house—using only primitive tools and natural materials. This project was a true ...