This started out as one of those "Too strange to be true" stories that I received via email. Turns out that it was an urban myth, but still cool.
The story as I received it told about a guy from New York who bought some land in Portugal. On this land was a huge barn that had been welded shut. Supposedly no one bothered to look in the barn before they sold it. When the new owner cut open the doors, he found a treasure trove of cool old cars.
Links:
http://www.intuh.net/barnfinds/
http://www.sportscarmarket.com/articles/archives/1110