There’s nothing like a random and interesting fact to keep a circle of friends entertained. And if you’re on the lookout for some juicy facts that will entertain your buddies, we’ve got just the thing for you. So, here’s a list of unusual and interesting facts that you can share with your loved ones. Enjoy!

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In Utrecht, people press an online fish doorbell to alert lock operators when fish wait upstream.

In Utrecht, the Netherlands, people can watch a live underwater camera and press an online fish doorbell when they spot fish waiting at a lock. That alert helps the lock keeper know fish are there, and the lock is opened when enough fish are waiting so they can keep moving upstream.

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Samsung dismissed Android, then Google bought it and won mobile.

Before Google bought Android in 2005, Android’s founder pitched Samsung on buying or funding it. Samsung executives passed and mocked the idea. Soon after, Google acquired Android and turned it into today’s Android OS.

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$8 Goodwill NES Stadium Events flipped for $25K online.

Jennifer Thompson spotted ultra-rare NES game Stadium Events at Goodwill and bought it for $8 despite having just $30 in her account. She knew it was valuable from collector forums. A game store offered all their register cash, but she declined and sold it online for $25,000—a massive windfall.

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Gruen envisioned malls as walkable towns—stores plus civic services and homes.

Victor Gruen, who made the very first shopping malls, dreamed they would be like little towns! He wanted stores mixed with homes to live in, libraries for books, green parks, post offices, doctor offices, and more—all in one happy place where people could walk and hang out.