I absolutely love this one: https://www.cheapoldhouses.com/latestlistings/ it's literally just what the name suggests. It's homes (mostly in the US, but they have a list for "foreign" homes as well) that are < $100k with 3+ acres and usually they need lots of work.

It's fun to look at the history of the homes and think about how you could renovate it into a personal home, or a bed and breakfast or something.