First, i'd set aside two million for investment purposes. Stocks, bonds, CD's, etc.
Second, make sure my parents were comfortable and had everything they needed.
After that, i'd invest in property, renovation, and the like. I'd like to design and build a house somewhere, possibly Europe or Scandinavia and use that as my home base.
I'd like to start several businesses including an imported furniture and accessories shop, offering furnishings from all over the world including reclaimed furniture from Indonesia, Thailand, etc. A global market geared toward the average customer but also offering business for designers or "to the trade". One of my favorite things (and part of what I do for a living) is to incorporate exotic furnishings with antiques. I discovered several years ago i'm quite good at it. I'd like to teach others how to do it as well.
Then that would be a great excuse (as if I needed one) to travel all over the world to pick by hand the furniture to be sold in my shops. I've always wanted a multi-faceted career that served to satisfy my endless curiosity, meeting new and interesting people, and exploring new areas.
Last but not least, i'd take time to smell the proverbial flowers, watch the sun set, and see the beauty all around me. Oh wait. I do that now and it costs nothing.