The Evolution of STEM

The Evolution of STEM (21355-1) is a set in the LEGO Ideas and CUUSOO theme, released in 2025. It has 867 pieces and 3 minifigures.

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Number:21355-1
Released:March 2025
Pieces:867
Box size:26.2 × 38.2 × 7.1 cm
Theme:LEGO Ideas and CUUSOO

Box size and weight as measured by Brickset.

In numbers

Over the last 30 days the lowest shop price recorded for this set was 68.75 USD, taken from 30 days with a price on record.

Since 10/2/2026 the lowest shop price has fallen from 89.79 USD to 69.66 USD, by 22 % (based on 35 days with a price on record).

LEGO expects to retire this set in December 2026.

Product details

Number: 21355-1
Name: The Evolution of STEM
Theme: LEGO Ideas and CUUSOO
Released: March 2025
Launched: March 2025
Retires: December 2026 (expected)
Pieces: 867
Minifigures: 3
RRP: ≈ 70.22 USD (99.99 CAD) (Canada)≈ 89.79 USD (79.99 EUR) (Germany)≈ 92.39 USD (69.99 GBP) (United Kingdom)79.99 USD (United States)
Price per piece: ≈ 0.081 USD (0.115 CAD) (Canada)≈ 0.104 USD (0.092 EUR) (Germany)≈ 0.107 USD (0.081 GBP) (United Kingdom)0.092 USD (United States)
Best price (30 days): 68.75 USD
Price per piece (best offer): 0.080 USD

≈ marks a price converted into this currency at the ECB reference rate of its own date — a reference indication, not a tradeable rate. The price as observed follows in brackets.

BrickLink market data

We hold no current BrickLink prices for this set right now. BrickLink's own price guide is one click away.

View the price guide on BrickLink

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Description from LEGO.com

A fantastic history gift for women, men and STEM enthusiasts

Source: LEGO Shop Advertising

Can I build this?

Check this set against the parts you already own.

We count your loose parts and the copies you own,
suggest the fewest copies to open,
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Pricing

Best price ever≈ 68.75 USD (271.99 PLN) Advertising Sealed · gross · LEGO® Shop (PL) · seen 10/28/2026

Current best offer≈ 69.66 USD (271.99 PLN) Advertising Sealed · gross · LEGO® Shop (PL) · seen 11/4/2026 In stock at LEGO

Price history

Lowest shop price now69.66 USD
Lowest ever 68.75 USD

Each day's lowest price among the shops' current offers, including VAT. A price in another currency is converted at the ECB reference rate of its day.

Monthly lows as a table

Month	Lowest price
November 2026	68.81 USD
October 2026	68.75 USD

≈ marks a price converted into this currency at the ECB reference rate of its own date — a reference indication, not a tradeable rate. The price as observed follows in brackets.

Price statistics by condition

Nobody has sold this set recently.

Sources idee+spiel: 35 · LEGO® Shop (DE): 26 · LEGO® Shop (AT): 25 · LEGO® Shop (CH): 25 · LEGO® Shop (CZ): 25 · LEGO® Shop (HU): 25 · LEGO® Shop (GR): 24 · LEGO® Shop (IT): 24 · LEGO® Shop (PL): 24 · LEGO® Shop (RO): 24 · LEGO® Shop (SK): 24 · LEGO® Shop (BR): 15 · LEGO® Shop (FR): 14 · LEGO® Shop (BE): 6 · LEGO® Shop (GB): 6 · LEGO® Shop (US): 6 · LEGO® Shop (DK): 5 · LEGO® Shop (ES): 5 · LEGO® Shop (FI): 5 · LEGO® Shop (IE): 5 · LEGO® Shop (LU): 5 · LEGO® Shop (PT): 5 · LEGO® Shop (SE): 5 · LEGO® Shop (NL): 4 · LEGO® Shop (NO): 4

Where these prices come from

On eBay

The cheapest eBay listings we saw in the last seven days. They are sellers' asking prices, so they are not in the shop price list or the best offer.

We have not seen a current eBay listing for this set.

Recommended retail price

What LEGO published as the recommended retail price, market by market, in that market's own currency. No market's price is ever derived from another's.

Canada ≈ 70.22 USD (99.99 CAD) unknown tax basis Available since 2/2/2025 — still on sale as far as we know.Recorded by BrickDb since 10/2/2026

Germany ≈ 89.79 USD (79.99 EUR) gross Available since 2/2/2025 — still on sale as far as we know.Recorded by BrickDb since 10/2/2026

United Kingdom ≈ 92.39 USD (69.99 GBP) gross Available since 2/2/2025 — still on sale as far as we know.Recorded by BrickDb since 10/2/2026

United States 79.99 USD net Available since 2/2/2025 — still on sale as far as we know.Recorded by BrickDb since 10/2/2026

≈ marks a price converted into this currency at the ECB reference rate of its own date — a reference indication, not a tradeable rate. The price as observed follows in brackets.

Display case for this set

A display case made to fit this set, sold by a partner shop. The price is the shop's own, including VAT; delivery is extra.

The Evolution of STEM Display Case for LEGO 21355 40.80 GBP grossplus 10.50 GBP deliverySold by iDisplayit · price read 10/7/2026

AdvertisingView at iDisplayit

Light kits for this set

LED lighting made to fit this set, sold by a partner shop. The price is the shop's own for its cheapest version, including VAT; delivery is extra.

20% off with the code BRICKDB20

Light Kit for The Evolution of STEM 21355 from 46.99 EURSold by Game of Bricks · price read 11/5/2026

AdvertisingView at Game of Bricks

Building instructions

All building instructions for this set on LEGO.com

Parts in this set

446 inventory lines

Catalogue image of the part Sticker Sheet for Set 21355-1

Sticker Sheet for Set 21355-1 10111467· [No Color/Any Color]

×1

Catalogue image of the part Bar Holder with Clip

Bar Holder with Clip 11090· Flat Silver

×2

Catalogue image of the part Tile Special 2 x 2 Inverted

Tile Special 2 x 2 Inverted 11203· Tan

×1

Tile Special 2 x 2 Inverted 11203· Reddish Brown

×1

Catalogue image of the part Brick Special 1 x 2 with 2 Studs on 1 Side

Brick Special 1 x 2 with 2 Studs on 1 Side 11211· Reddish Brown

×4

Brick Special 1 x 2 with 2 Studs on 1 Side 11211· Medium Nougat

×1

Plate 3 x 3 11212· Black

×2

Catalogue image of the part Tile Round 1 x 2

Tile Round 1 x 2 1126· White

×3

Catalogue image of the part Brick Curved 2 x 1 No Studs [1/2 Bow]

Brick Curved 2 x 1 No Studs [1/2 Bow] 11477· Tan

×1

Brick Curved 2 x 1 No Studs [1/2 Bow] 11477· Bright Light Orange

×2

Catalogue image of the part Plate Round 4 x 4 with 2 x 2 Round Opening

Plate Round 4 x 4 with 2 x 2 Round Opening 11833· Red

×2

Catalogue image of the part Tile 2 x 2 Corner

Tile 2 x 2 Corner 14719· Black

×2

Tile 2 x 2 Corner 14719· Reddish Brown

×2

Catalogue image of the part Tile Round 2 x 2 with 'C' on Black Background Print

Tile Round 2 x 2 with 'C' on Black Background Print 14769pr1211· Light Bluish Gray

×1

Catalogue image of the part Brick Curved 2 x 2 x 2/3

Brick Curved 2 x 2 x 2/3 15068· Tan

×15

Catalogue image of the part Plate Special 1 x 1 with Vertical Tooth

Plate Special 1 x 1 with Vertical Tooth 15070· Black

×1

3 minifigures

Minifigures in this set

Catalogue image of the minifigure George Washington Carver

Same theme, piece count within 15 %

Similar sets

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The Evolution of STEM

In numbers

Product details

BrickLink market data

Description from LEGO.com

Can I build this?

Pricing

Price history

Latest price from each shop

On eBay

Recommended retail price

Display case for this set

Light kits for this set

Building instructions

Parts in this set

Minifigures in this set

George Washington Carver

Isaac Newton

Marie Skłodowska-Curie

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