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  4. Castle

LEGO 2005 / Duplo / Castle Sets

In 2005, LEGO released 3 Duplo Castle sets, all of these sets have been retired. For that year, the total price of all retail sets cost $140, today those sets are valued around $2,057, a growth of 1369%.
Most valuable 2005 LEGO Duplo Castle set
4785 Black Castle $1,735.54
3 sets

4779 Defence Tower

Theme / Subtheme Duplo / Castle
Year 2005
Pieces / Duplo figures 64 / 2
Availability Retired
4779 LEGO Duplo Castle Defence Tower
Retail $24.99
Value $169.91
Growth  +579.9%
Annual growth 7.5%

4784 Castle Black Dragon

Theme / Subtheme Duplo / Castle
Year 2005
Pieces / Duplo figures 8 / 1
Availability Retired
4784 LEGO Duplo Castle Black Dragon
Retail $14.99
Value $151.31
Growth  +909.4%
Annual growth 7.1%

4785 Black Castle

Theme / Subtheme Duplo / Castle
Year 2005
Pieces / Duplo figures 380 / 6
Availability Retired
4785 LEGO Duplo Black Castle
Retail $99.99
Value $1,735.54
Growth  +1635.7%
Annual growth 10.6%

Year Pricing

Retail
$139.97   (for all 3 sets)
New/Sealed
Value
$2,056.76
Growth
+1369.43%
Annual growth
+7.33%
Used
Value
$410.44

Community Stats

The following are the top 3 most owned 2005 Duplo Castle sets by LEGO collectors.
#1Black Castle
#2Defence Tower
#3Castle Black Dragon

About LEGO Duplo Castle

LEGO DUPLO Castle is a subtheme of the DUPLO line, designed for younger children with larger bricks for easier handling. Active from 2004 to 2008, the DUPLO Castle sets featured medieval-themed elements such as knights, castles, and dragons. Notable sets include "DUPLO Castle" (4777), "King's Castle" (4864), and "Knights' Tournament" (4776). These sets provided a simplified yet engaging medieval play experience for preschool-aged children.
2005 LEGO Sets
2005 marked the formal introduction of LEGO City, succeeding Town as LEGO’s modern urban theme. Star Wars minifigures transitioned from classic yellow to light nougat skin tones, aligning with other licensed lines. New themes included Dino Attack (Dino 2010 in Europe) and Vikings, while LEGO Star Wars: The Video Game debuted, establishing the long-running TT Games franchise. The year also celebrated 50 years of the LEGO System and growing digital expansion.