In 2009, LEGO released 2 Architecture Landmark Series sets, all of these sets have been retired. For that year, the total price of all retail sets cost $40, today those sets are valued around $198, a growth of 396%.
Most valuable 2009 LEGO Architecture Landmark Series set
21003 Seattle Space Needle $132.17
Largest 2009 LEGO Architecture Landmark Series set
21002 Empire State Building 77 pieces
Theme / Subtheme Architecture / Landmark Series
Year 2009
Pieces 77
Availability Retired
21002 LEGO Architecture Empire State Building
Retail $19.99
Value $65.94
Growth  +229.9%
Annual growth 7.5%
Theme / Subtheme Architecture / Landmark Series
Year 2009
Pieces 57
Availability Retired
21003 LEGO Architecture Seattle Space Needle
Retail $19.99
Value $132.17
Growth  +561.2%
Annual growth 14.1%