I built a secret pool inside my room to hide from my mom! Thanks to Lenovo and NVIDIA for sponsoring this video! Check out the Lenovo Legion 7i with GeForce RTX 5070 Laptop GPU here: bit.ly/matthewbeem Subscribe to @MatthewBeem Subscribe to @BeemTeam Subscribe to ‪ @BeemGaming 📱 FOLLOW MY SOCIALS 📱 ➽ Instagram - @MatthewBeem ➽ Twitter - @MatthewBeem ➽ TikTok - @MatthewBeem I’ve been obsessed with secret rooms for years, so I decided to take it to the next level and build a secret indoor pool inside my house without my mom knowing. We found the perfect hidden spot in my basement, cut into the wall, and transformed an old storage room into a full-on indoor water park with a huge in-ground pool. To make it even crazier, we added a custom water slide (including a secret entrance slide), a poolside movie theater with a projector and screen, LED lighting, and a cave-themed build with sculpted rock walls and dinosaur fossils. We even set up a hidden gaming area so we could ...