First I'd buy my own house from the bank. Next I'd buy each of my neighbor's houses going out three or four blocks and gift them to them, with the option to stay or move at any time in the future and sell them back to me at market rate. If they sell it back to me, take the cash and move, I put the property up for sale to the lowest bidder - ie, I would offer them to local families who needed it most, selling them for literally pennies.

I would then start gifting large amounts to local schools, with the rider that it has to go towards increasing salaries for all existing staff first, followed by creating a floating fund for supplies and meals so that no teacher or family in need ever had to buy them out of their own pocket.

After all that I'd start commissioning giant bronze statues of my favorite fictional characters and plopping them down on undeveloped land in the area, then building parks around them.

Near one of these parks I'd build a great big classically-styled movie theater that plays classic films for three bucks a ticket. Operating costs would be paid for from a fund set up to keep the place open and running indefinitely, with all ticket sales to go to local charities.