How would you spend $20 million a year?

Pretend the $20 million is guaranteed, and if anything will increase slightly over time.

What problems could be significantly improved for $20 million?

(I am dreaming of winning the $1.55 billion Powerball drawling. Then taking the lumpsum, posting taxes, investing, and spending 4% each and every year. I understand that the actual may be more, or less than the started amount.)