This is video of Youtuber Benjamin Große building LEGO's largest (7,541-pieces, measuring 33-inches long and 22-inches wide and weighing 19-pounds when complete) and most expensive ($800) model to date -- set 75192, the Star Wars Millennium Falcon. Benjamin estimates it took around 20 hours to build using the 500-page instruction book, which he condensed into a minute and a half timelapse for those of us who will never own the set ourselves because it costs $800 and diapers are expensive. "Wait -- you have children?" No I do not.
Keep going for the video.
Thanks to Luc, who decided to build the set by buying all the pieces individually from LEGO and is now $6,000 in debt.