There's a property close by I'd like to own.
Same here, there's a huge piece of land less than a mile from here that would be perfect for a dream house. I'd buy that, build my dream home and dream garage/party building, and enjoy it.
I'm assuming you mean something like winning the lottery, so:
I'd pay off all the bills/mortgages of immediate family. If it was a super-huge lottery, maybe set them all up with million-dollar investment accounts...most aren't responsible enough to just give them the cash to do so. They'd be back in a year, broke.
There are a few no-kill animal shelters I'd like to see do better around here, so I'd helpe them.
Probably a few other places I'd like to help, too, but I'd just take my time and help others as much under the radar as possible. Anonymously, if I could.
But I'd take care of my own family first.