I have not yet made a genealogy visit to Hannover because I'm still working to ascertain which little boy of the same age with the same name was my great-grandfather on the 1851 Census.
However, the other side of the family, from another part of Germany, revealed itself in early 1991 when we were given (12 years after the written request for information and the cashing of our contribution check) a copy of an autobiography handwritten in old German script by our immigrant's youngest son upon his entrance into a seminary in Maryland in 1851 (along with the record of all his religious assignments and the daily diary of his final months in the infirmary).
The autobiography told where he was born, the maiden name of his deceased mother and their village, name of their village church, etc. I was set! I had found "our place of origin!" And within 6 months I was there, standing in that church, walking those streets, feeling all that emotion you describe, Linda! I cried, it was just so impossible to believe!
In the next 12 years, I was to learn much more. For example, my ancestors changed villages in that general area every generation! They were tradesmen, not farmers! Just how many millers or blacksmiths or tailors could one tiny village employ? So one son would inherit and the remainder had to migrate! Hopefully they found good apprenticeships, married the boss's daughter, and inherited the business and the home. But move they did!
Then I learned that the direct male line in that region which carried the surname of my grandmother (which I'd always argued was French and not German) actually came to this part of Germany only in the 17th century -- and from the French-speaking Netherlands, Wallonia, with one indigo dyer moving on over to Germany when the Tapestry industry became so popular and widespread in the 17th century -- and thereafter the line intermarried with local, long-established Germans.
In 2004 I went back to 14 villages (counting those of wives) and didn't have time for the rest that I knew about! We went to the harbor of Antwerp and walked the old cobblestones at the harbor from which their sailing ship left for a truly treacherous voyage to New York.
Heading to Germany again in December, I plan to see more ..... and I hope I'll have the other side's "place of origin" in Hannover and perhaps even that "place of origin" for the 1600s in Belgium to visit also, this time!
So our ancestors moved just as we do. Maybe "the place" will turn out to be just one of many for you, too!
I recommend to each person to look for web sites for your villages before you go, through Alta Vista, Google and other search engines. I have had enormous luck in finding those, learning from them, having those who maintain the websites find for me and show me our ancestral homes and businesses, etc., etc.
Isn't this fun?
Maureen