Kids don't have all the fun with LEGOs: Adults do get to help build intricate models such as 6,000-plus piece Hogwarts Castle model. But there are some LEGOs officially targeting adults up for grabs.

Yes, you read that right—we built a working fish pond using LEGOs! This DIY project combines creativity, engineering, and a splash of fun to create a one-of-a-kind aquatic setup. Can it hold water?

This video shows the step by step build of a fully working Lego fish pond, and it turns out way cooler than it sounds. You will see the stacking, sealing, and setup that turns plastic bricks into a ...