The deal for an 81-story, 1,000-foot skyscraper proposed to be developed in the heart of downtown Denver is dead, the owner of the land said Thursday afternoon. Buzz Geller, whose Paradise Land Co. is the owner of the 25,047-square-foot parcel at 1650 17th St., said he has put the land back on the market for…

I first started talking to New York City-based developer Mike Ursini last March about his plans to build the tallest building in Colorado. Our agreement was that by sitting on his blockbuster $400 million development at 650 17th St., he would give the story to me first. https://www.youtube.com/watch?v=lloqw7_wWck Six months later, it didn’t work out…