The Metal Earth models are amazingly detailed etched models that are fun and satisfying to assemble. Each model starts out as 4 inch square metal sheets and you simply pop out the pieces using wire cutters and follow the included directions to assemble your model. 30 Rockefeller Plaza was also known as the RCA Building until 1988 and is today referred to as the GE building. It is also carries the nickname 30 Rock and is most famous for being the headquarters of the television network NBC. The model is 3.7x2.35x1.15 inches when built. Difficulty level: Moderate. No glue or solder needed.