The short answer is nowhere, assuming that by safe you mean an investment that will provide the return you seek without subjecting your principal to the possibility of loss.
Indeed, it's safe to say you won't find any investment today that comes anywhere close to returning 5% to 7% a year that you could realistically describe as safe.
To confirm that's the case, just look at the type of investments that provide the greatest protection of principal — FDIC-insured money-market accounts, savings accounts and short-term CDs. Even if you shop around for the highest-paying accounts, you're probably looking at annual yields of 1% or so.
Walter Updegrave | CNN Money