Ooh, where to start...
If I exclude all the charities I'd support/start including the 'small' donation to the NHS so they can employ/retain enough staff and do away with waiting lists, the properties I'd buy to rent out to DSS/with children/pets etc (the amount of people I know who are working F/T in child care etc who can't get a property as they still have to claim housing benefit (and have pets and children) is ridiculous) then...
A country house with a very, very large garden so I can grow all my veggies and fruit while still having enough space for several dogs to run around.
Rainwater tanks supplying water to the loos and washing machine. Solar roof (not just a few panels), small wind turbines on the roof. Ground/air source heat pumps that are waaay more efficient than are available at the moment.
An en suite with bath AND separate shower. A lift going between floors - and big enough for the housekeeper/PA to transport a clothes rail of finished laundry up to the bedrooms.
A large pantry, a scullery for all my baking bits and bobs and to keep all the vases etc in, a mud room with doggy shower, a full size indoor (heated) pool, a gym to help keep me fit and a sauna and a steam room to help with all those aches and pains. Not forgetting a huge library for all the books I keep acquiring...
Fields beside the house to keep the horses including the ones I'd like to get... I might have had to give up riding but I haven't given up my love for horses!
The money to have a live-in (in the staff quarters, naturally...) chauffeur/gardener and housekeeper/PA.
And that's all I can think of off the top of my head, lol
Oh, how wonderful life will be when I win the lottery with the ticket I never buy 