This is Model 10179, Ultimate Collector’s Millennium Falcon. It weighs more than 20 pounds and consists of 5195 pieces. It took the builder and his son about 30 hours. The completed model is about 33″ long, 22″ wide and 8″ tall. This video shows each step of assembly from the instruction manual.
All I can is “wow”. I was very impressed when my son built the new Ferrari set for his Granddad this past Father’s Day…