Nastco/iStock via Getty Images One of the most fascinating companies on the market at this point in time has got to be Medical Properties Trust (NYSE:MPW). If you are reading this article, odds are that you know what the company does. But for those who don't, it's worth mentioning that it is a REIT that owns and leases out hundreds of buildings that are used by the medical industry. Usually, REITs are viewed as bastions of safety that generate strong returns for investors. But this is not always the case. F ...