The Ultimate Collector's Series, or UCS, is a LEGO subtheme of Star Wars introduced in 2000 and was meant to be more detailed and aimed at older builders. These Ultimate Collector's Series sets tend to be larger, and more expensive than typical sets.
2001 LEGO Sets
2001 marked the global debut of BIONICLE, a story-driven theme that blended mechanical building with rich mythology, becoming one of LEGO’s most successful original lines. LEGO Harry Potter launched alongside The Sorcerer’s Stone film, beginning a long-running partnership with the Wizarding World franchise. Other new releases included Alpha Team and the action-oriented Racers theme. LEGO also introduced Serious Play for business training and Jack Stone for younger builders. Life on Mars was launched and discontinued within the same year, while LEGO expanded its global retail presence with new brand stores in Europe and the U.S.