Looks like Picard is on a moon surrounding a gas giant

But the RADIATION and or the MAGNETIC FIELD coming from JUPITER would probably also prevent him from standing there on EUROPA???

I was about to mention the same thing ,I also don't think he is on Europa that would mean the series would take place billions of years in the future before Europa becomes habitable(when our sun enters his red giant phase) ,also if Picard was on Europa he would be on a boat looking over a vast ocean

Picard is overlooking a vineyard standing beside a barrel in the background we see the outlines of a small village (we see a church spire ),it could also be a colony on some alien starsystem populated by colonist from those tiny villages in France and took that lifestyle and philosophy with them to that colony.

The wooden barrel is probably am indication that they are traditionalists ,and it sure makes a difference when wine matures in wooden barrels so I think that would be very important if they make wine in the traditional manner

If one has watched TNG closely one could see that despite him being in Starfleet Picard is very much a traditionalist ,who believes in family and family traditions and the family's legacy.Robert doesn't completely dismiss technology he is just the type of person that is of the opinion that if something has worked for centuries to ones satisfaction why replace it with something new of which one doesn't know it provides the same quality just for the sake of convenience.By doing it the old way Robert is preserving an centuries old family tradition and legacy and passing on these traditions to the next generation.After leaving Starfleet Picard may have decided now that Robert and Rene have died that he is the lat in line to preserve these traditions by doing things the way Robert would have done. This piece of dialogue from Generations may provide insight why perhaps Picard choose for this.

• PICARD: Yes. Come. ...Yes, Counselor. Is there something I can do for you?
• TROI: I've come to see if there's anything I can do for you.
• PICARD: Oh, it's just family matters. ...You never met my brother and his wife, did you?
• (Picard opens a photo-album that he had been studying)
• TROI: No.
• PICARD: Robert. ...So opinionated. So pompous and arrogant. He always had to have the last word. But he mellowed a little bit in the last few years. I was going to get together with them all next month on Earth. I thought we'd go to San Francisco. René's always wanted to see Starfleet Academy.
• TROI: René? Oh, your nephew.
• PICARD: He's so unlike his father. He's a dreamer. Imaginative. ...Very gentle.
• TROI: What's happened?
• PICARD: Robert and René, they're... ...burned to death in a fire.
• TROI: I'm sorry.
• PICARD: That's all right, Counselor. These things happen.
• TROI: Captain, it's not all right.
• PICARD: I can't help keep thinking about ...about all the experiences that René is not going to have. Not going to Academy, reading books and listening to music, falling in love. ...Building a life. ...Well, it's not going to happen now.
• TROI: I didn't realise he meant so much to you.
• PICARD: I'd come to feel that René was as close as I would get to having a child of my own.
• TROI: Your family history is very important to you, isn't it?
• PICARD: Right. Oh, ...from being a small child, I can remember being told about the family line. The Picard who fought at Trafalgar. The Picard who won the Nobel Prize for chemistry. The Picard's who settled the first Martian colony. When Robert married and had a son, I...
• TROI: ...You felt it was no longer your responsibility to carry on the family line.
• PICARD: Right. Yes. That's it exactly. You know, Counselor, Recently I've become very much aware that there are fewer days ahead than there are behind. ...But I took comfort from the fact that ...the family would go on. But now there'll be no more Picards.

Who the Shinzon he gets impaled in Nemesis and tries to kill Picard in a King Arthur Mordred style

There was this time when Ferengi Daimon Bok tried to get revenge on Picard for killing his son ( TNG The Battle) a second time by persuading Picard that he had a son and his was going to kill him unless Picard would surrender to him which all turned out to be a hoax.