Trafalgar Square
21045-1 Architecture 2019 1197 parts 1.5% repair risk Advanced
The LEGO Architecture 21045 Trafalgar Square set recreates London's historical landmark with 1197 pieces. This detailed interpretation showcases the National Gallery, complete with its columned facade and distinctive domed roof. The rear sections of the gallery structure are designed to be removed, granting access to a detailed interior featuring a brick-built statue and paintings. Central to the square is Nelson's Column, accurately flanked by its four iconic lions, alongside the famous square fountains and four sculpture plinths. Tree-lined borders, ornate lampposts, two classic London buses, and two black cabs populate the tiled baseplate, which depicts the square and surrounding roads. A decorative nameplate completes the display model, offering a scaled representation of the British capital's heart.
21045-1
3D build progress
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Parts Inventory
| Part | Qty | LEGO price each |
|---|---|---|
![]() Plate 3 x 3 11212 | 3× | €0,12 |
![]() Tile 2 x 2 Corner 14719 | 6× | €0,06 |
![]() Tile 2 x 2 Corner 14719 | 2× | €0,06 |
![]() Panel 1 x 4 x 1 with Rounded Corners [Thin Wall] 15207 | 8× | €0,13 |
![]() Plate Special 1 x 2 with 1 Stud with Groove and Inside Stud Holder (Jumper) 15573 | 11× | €0,06 |
![]() Plate Special 1 x 2 with 1 Stud with Groove and Inside Stud Holder (Jumper) 15573 | 11× | €0,06 |
![]() Plate Special 1 x 2 with 1 Stud with Groove and Inside Stud Holder (Jumper) 15573 | 1× | €0,06 |
![]() Plate Special 1 x 2 with 1 Stud with Groove and Inside Stud Holder (Jumper) 15573 | 8× | €0,06 |
![]() Plate Special 1 x 2 with 1 Stud with Groove and Inside Stud Holder (Jumper) 15573 | 12× | €0,06 |
![]() Plate Special 1 x 2 with 1 Stud with Groove and Inside Stud Holder (Jumper) 15573 | 4× | €0,06 |
![]() Tile Special 1 x 1 with Clip with Rounded Edges 15712 | 5× | €0,12 |
![]() Plate Special Round 2 x 2 with Center Stud (Jumper Plate) 18674 | 2× | €0,07 |
Repairability
Can you fix Trafalgar Square if a piece goes missing?
3 of the 205 part+color combinations in this set appear in 3 or fewer sets ever made. Lose one of those and a replacement is very hard to find.
Theme average
2.8%
All sets
6.7%
Hardest to replace
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Build DNA
Parts inventory insights for Trafalgar Square
1,197 pieces puts this build +21% against the average Architecture set and +191% against the average 2019 release.

Vs average Architecture set
Average Architecture set: 988 pieces across 66 other sets.
Vs average 2019 set
Average 2019 set: 412 pieces across 448 other sets.
Color profile
Dominant color
White
Unique parts
0.6 pieces per unique type
Repeat factor
Average pieces per unique type.
Most used part
Plate 1 x 1
170xResults are based on official LEGO part inventories. Accuracy improves as you confirm set completeness.
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![Panel 1 x 4 x 1 with Rounded Corners [Thin Wall]](https://cdn.rebrickable.com/media/parts/elements/6071299.jpg)







