Are there any summer splash pad type backyard set ups for older kids? (11+)

I really hope this is the right sub for this but it is the firsr summer we can afford to set up our backyard with something fun and I feel really sad because my youngest is 11. (I also have a 17 yr old but she still likes kid stuff so may get out there w us) Most of what i see online is for young kids..so i was hoping to see if anyone had any recommendations for summer set ups for olderm