The scheme works like so and it's ran by banks. Financial assassins come from United States and make a country take credit, which they can not repay. Then they make them take more credit to pay on interest. Then national currency defaults and power structure of the country collapses. United States can get the natural resources for pennies. This was the story with Russian gas and oil. (Putin froze western contracts that's why so much anti Putin crap now)
In Greece it's a little different. Greece refused to go along with this scheme. People are against austerity and default. They don't want to repay the credits, which were shoved down their throats. Investing into a country that is not stable is absurd.
Besides, Greek real estate was long ago bought by the banksters who provided the credit. Now it's being sold - to you and others like you - to return money somehow. Frankly I don't see Greece resolving itself without some sort of military involvement later down the road, people there had enough, and we could assume a revolution taking place.
No, don't invest money into a country on the brink of civil war.
Tell us, just freaking tell us, who gave you this idea?