Jack Ma philanthropy

Chinese billionaire Jack Ma just shelled out $23 million for a property in New York's Adirondacks that was once owned by William A. Rockefeller, Jr.

But that's no dent in Ma's overstuffed wallet. The co-founder and acting chairman of Alibaba is both the richest man in China and the 18th richest in the world.

Here's a look at Ma's latest expansion into the U.S. - 28,100 acres in one of America's most beautiful nature preserves - and what he intends to do with it...