Setobrick

LEGO Architecture 21045 Trafalgar Square

20191,197 piecesno minifigures

LEGO 21045 Trafalgar Square

Specifications

Set number21045
Release year2019
Piece count1,197
Minifigures0
ThemeArchitecture
Building instructionsDownload the instructions on lego.com

Where to buy set 21045

Also on: Amazon.co.uk · Amazon.ca

Price and availability are provided by partner stores and may change at any time.

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LEGO 21045 Trafalgar Square is an Architecture set depicting the well-known London square.

This set places Trafalgar Square within the LEGO Architecture theme, which focuses on scaled interpretations of real buildings and places. It is not tied to a story-based licence, but to an architectural and urban subject, presenting a public space strongly associated with London.

Its emphasis is therefore on layout, massing and overall recognition rather than characters or play scenes. The parts are used to compress the square into a compact display model, with a stylised approach consistent with the Architecture range.

LEGO 21045 is mainly suited to Architecture collectors, people interested in urban landmarks and builders looking for a model to display. Within the theme, it belongs with sets based on real locations, and can be understood through its city subject, restrained presentation and compatibility with other architectural display models.

Inventory of set 21045

The inventory of set 21045 lists 1,197 pieces, spare parts excluded: 205 different lots (one shape in one color) for 121 part shapes. The box also contains 45 spare parts, for small elements that are easy to lose.

Colors of set 21045

Main color: white, making up 37% of the parts, followed by light bluish gray (21%) and dark bluish gray (8%).

ColorPartsShare
White44137%
Light Bluish Gray25321%
Dark Bluish Gray968%
Black655.4%
Trans-Brown605%
Trans-Clear504.2%
Green484%
Trans-Light Blue302.5%
Red252.1%
Tan221.8%
Other colors (12)1078.9%

Part types

TypePartsShare
Plates39333%
Tiles24120%
Plates Round Curved and Dishes15413%
Plates Special1119.3%
Bricks Sloped484%
Bricks453.8%

Most common parts in set 21045

115 of the 121 part shapes in this set have their own page on Setopedia, with their colors, element numbers and the other sets that use them. See all LEGO parts

Exclusive parts in set 21045

One part shape in set 21045 appears in no other set in the catalog, most often a printed element, a sticker or a mold specific to the model. If it gets lost, you will need to look for it individually, for example on BrickLink, rather than in another set.

PartColor
Tile 1 x 8 with "Trafalgar Square" print 4162pr0069Black

Rebuilding set 21045 from another set

Share of the parts of set 21045 found in each of these similarly sized sets, counting shape, colour and quantity:

SetFoundPartsRelease year
71040 Disney Castle37%4,0812016
10255 Assembly Square35%4,0022017
75308 R2-D233%2,3142021
75827 Firehouse Headquarters33%4,6422016
75409 Jango Fett's Firespray-Class Starship33%2,9702025

No similarly sized set goes above 37%: the model relies on a little-shared assortment, most of which has to be gathered piece by piece.

Size of set 21045 within its line

With 1,197 pieces, set 21045 ranks #14 out of 64 Architecture sets in our database, which have an average of 846 parts. Among the 459 sets released in 2019, it ranks #34.

The set in 3D

Spin the official model of the set, brick by brick.

Load the 3D model

3D model: Orion Pobursky, LDraw.org Official Model Repository (CCAL 2.0 licence)

Frequently asked questions

How many pieces does LEGO set 21045 Trafalgar Square have?

LEGO set 21045 Trafalgar Square has 1,197 pieces. It was released in 2019 as part of the Architecture theme.

What year was LEGO set 21045 released?

Set 21045 Trafalgar Square was released in 2019 and belongs to the Architecture theme.

Which minifigures are included in set 21045?

LEGO set 21045 Trafalgar Square does not include any minifigures.

Where can I find the building instructions for set 21045?

The instructions for LEGO set 21045 Trafalgar Square can be downloaded free as a PDF from the official lego.com website, under “Building Instructions”, by entering the number 21045.

What is the main color of LEGO set 21045?

White, with 441 out of 1,197 pieces, or 37%. Next come light bluish gray (21%) and dark bluish gray (8%).

How many different parts does set 21045 contain?

Set 21045 has 205 different lots (one shape in one color), covering 121 part shapes. Most common part: Plate 1 x 1 in white, with 86 copies.

Does LEGO set 21045 contain any exclusive parts?

Yes: one part shape exists in no other set: Tile 1 x 8 with "Trafalgar Square" print.

Which similarly sized set contains the most parts from set 21045?

Set 71040 Disney Castle, released in 2016: it supplies 37%, counting shapes, colors and quantities.

Is this model part of a film or television licence?

No. It belongs to the LEGO Architecture theme and represents the real location Trafalgar Square.

Set number21045
Release year2019
ThemeArchitecture
Piece count1,197
Minifigures0
SetopediaData: Rebrickable
Spec sheet updated on 2026-09-30