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A sprawling Colorado estate long owned by billionaire businessman, sailor, and avid art and wine collector William “Bill” Koch has just hit the market. Nestled amid a scenic alpine valley tucked in between Castle Creek and the peaks of the Elk Mountains, about 10 miles outside of downtown Aspen, the 52-acre spread with a main home, several guest cabins, and a wealth of recreational pursuits is armed with a hefty $125 million price tag.
“You won’t find an opportunity to…
