Houses or Homes?

What is it about a place that makes us want to go there? Is it the way it looks? The way it feels? What is it about a house that makes it "home" rather than just a "house"? Somepeople say it's what you do with it; pictures and such. What if it's something deeper, something we don't even know is there?
For about five years now I've wanted to live in London, England. I don't know why. I've never been there before; what about it makes me want to go there so bad now? Is it the architecture? The mere fact that it's different from where I live now? If you look back at my history, I, as most people do, have some strain of bloodline from England. Could that be it? Could it be that one ancient line in me is stronger than another, thus making me want to go back to my 'roots'? What about my other bloodlines? Don't they have anything to say? Apparently not.
So what is it that makes me want to go there?
I've even found a house I want to buy there, in Notting Hill. How posh. I can honestly say though that it is my dream house or at least, the closest I think a real house could ever get to being my dream house without me actually building the thing from scratch. The kitchen alone is as big as my current bedroom. It's outstanding. But I can look at the pictures of it online, see the other persons furniture, their imprint on those walls and think..."That's home." So why? Is the place I now live in not home for me too? I guess not.
Moving around so often, 'home' begins to become somewhat of a myth; something you only ever hear about from other people, but never happens to you. But how can a place I have never been to before, in a Country I've never visited or even, seen in massive amounts of pictures or films for that matter, mean so much to me? The fact that to buy it, I would have to somehow get 3.25 million English pounds first, makes it even more strange.
What makes a house, a place, home for you? Is it the smells, the wall colours or what sheets you have on the bed? Or is it something deeper, something you can't quite put your finger on?

Let me know.

Until then,
xx
JC