Billionaire Bill Koch has put his 16,600-square-foot log mansion on 52 acres in Aspen up for sale for $125 million.

Aspen’s real estate market is stabilizing with a slight increase in unit sales, while Snowmass Village experiences strong ...

The post Oil Billionaire Bill Koch Lists His Eco-Friendly 'Once in a Lifetime' Aspen Estate for $125 Million—More Than Four ...

The energy mogul is looking to cash in on Aspen’s red-hot luxury market by offering up his massive property that’s replete ...

A popular restaurant in downtown Aspen was converted into a luxurious six-bed, 10-bath private home with a rooftop terrace ...

Software entrepreneur Mark Schaszberger and his wife, Trami Tran, have listed their Bethesda mansion, by far the largest ...

A sprawling Colorado estate long owned by billionaire businessman, sailor, and avid art and wine collector William “Bill” ...

Forbes said the 84-year-old lives in Florida with a real-time net worth of $2 billion — and after this house sale, he’ll be a ...

The property, at 125 Rooney Circle, boasts a rustic main residence with 16,631 square feet with seven bedrooms and eight ...