Babylon Park in London is an underground amusement park packed with fun for all ages. It's free entry and then you pay for the rides and food and drink. With 7 rides, including a rollercoaster and bumper cars, along with hundreds of arcade games, it's the perfect spot for a day out with friends or family. The coin system might be a bit confusing at first, but once you get the hang of it, you'll be zipping around on rides and racking up points on games in no time. Make sure to grab a snack at the food court between all the excitement!