Yanjiao Park has a children's playground, which is outdoor, but it's all small projects, but you didn't say high altitude landing on the moon. There must be Shijingshan amusement park in Beijing. You can get there by subway 1 line.

Yanjiao Puzzle Park Address: Shangde (Yanxing Street 129), South Gate of Xinghe Hao Yue Community, Yanshun Road Puzzle Park is an indoor game venue specially designed for children under the height of 120cm. Its design concept is inspired by children playing in forests, rivers and parks, so that children of different ages who don't know each other's names can play together indoors. The amusement facilities of the Education Amusement Park include: intellectual colorful ball pool, waterfall slide, spinning coconut tree, animal carousel, candy house trampoline, rotating coffee cup/pineapple turntable (newly developed game equipment is very popular with children, only Yanjiao Education Amusement Park is the only one), swing, rings, fist shaking (first floor of Naughty Castle), just visiting, deer jumping, elephant jumping, cow jumping and big jumping. Ticket price: 20 yuan is unlimited.