Billionaire Bill Koch has listed his expansive Aspen estate for $125 million ... He also owns a 4,500-acre Colorado ranch featuring a 75-building replica of an Old West town.

Below, a winter guide to where to ski, stay, dine, and aprés in Aspen, Colorado. Aspen Mountain serves as the heart of Aspen itself: in the 1940s, the resort opened right in town, and people ...

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Now, it seems he is ready to claw some of it back with the sale of his sustainable Aspen spread, telling the Wall Street Journal that he and his wife, Bridget Rooney Koch, made the decision to let ...

A sprawling Colorado ... 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 ...

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untreated lumber, and metal from the landfill. To encourage compliance, projects must meet a minimum recovery standard of 50% of total debris weight and submit a refundable deposit based on estimated ...

As a snowboarder living in Denver, Winter Park and Breckenridge have become favorites thanks to their proximity to the city. During my first Colorado winter, I spent three nights exploring Aspen ...

DENVER (KDVR) — A well-known billionaire put his Aspen home on the market ... According to Forbes, Koch is the brother of Koch Industries chairman and co-CEO Charles Koch. Bill sold his stake ...