By Xeba73 (2014-08-26)
Hildebrand is the founder and head of Hilcorp Energy, one of the world's largest privately-owned oil companies. As of August 2014, Forbes ranks him among the 100 richest Americans, worth an estimated $6.2 billion. He purchased this 11,271 sqft mansion on a 200-acre estate in 2011 for $13.25 million.