Some of the most expensive Lego sets include Star Wars Episode IV Imperial Star Destroyer 75252, H.C. Andersen's Clumsy Hans, 4000012 Piper Airplane, 10179 Star Wars Ultimate Collector's Millennium Falcon, 375-2 Lego Castle, 10123 Cloud City Lego Star Wars set, LIT2009 Ole Kirk's House Lego set, and Space Command ...