Official LEGO® image · © LEGO Group and/or the respective rights holders. Source: LEGO Italy ↗

Ninjago · SET 40703

Micro NINJAGO City

Micro-scale Ninjago City concentrates buildings, signs and stacked levels into a compact brightly coloured tower.

Pieces: 339
Release year: 2024
Theme: Ninjago
Set number: 40703
LEGO recommended age: 10+
Used · indicative value: ≈ 8.00 €

Official LEGO archive Official building instructions

Indicative market reference published by Brickset for the stated condition. Not a launch price or a guaranteed offer: completeness, packaging and condition can change the price. Brickset ↗ · Reference checked on 28 October 2026

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Official English name verified at: LEGO English archive ↗ · Checked on 26 October 2026.

TIME TO BUILD

How long does it take to build Micro NINJAGO City?

Individual build

A starting point for planning your build. Times for each experience level are editorial estimates, not measurements submitted by HowLongToBuild users.

Editorial estimate · first build

Beginner

≈ 2 h 45 minSuggested range1 h 30 min – 4 h 45 min

Intermediate

≈ 2 hSuggested range1 h – 3 h 15 min

Experienced

≈ 1 h 15 minSuggested range45 min – 2 h 15 min

Based on one person building the set for the first time, following the original instructions and using numbered bags where supplied. Includes normal piece-finding and minor adjustments; excludes long breaks, filming, dismantling and modifications. Sources may use different methods. This range is neither a statistical interval nor a limit: your build may take less or more time.

How we estimate times · sources and method

Editorial assessment: Micro-scale Ninjago City concentrates buildings, signs and stacked levels into a compact brightly coloured tower. The composition develops mainly upwards. A first build following the instructions, including normal piece finding; an adult may help when needed. Breaks, subsequent play and any alternative models are excluded. For older sets, unnumbered bags or previously mixed pieces may prolong sorting. No verified timed build: indicative values with substantial variation.

Sources do not always specify the builder’s experience. The three experience bands are our editorial assessment, based on the complexity of the set and individual accounts where available.

LEGO · set-specific instructions ↗
Official name, pieces, age and imagery; no timed building data.
LEGO · set manual ↗
Document for this set number. The duration is an editorial estimate, not a LEGO timing.

Checked: 26 October 2026 · Method v1.0 · Limited reports; not a statistical average.

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MAKE ROOM FOR YOUR NEXT BUILD

How much display space does it need?

Assembled-model dimensions are not yet documented for this set. Box dimensions cannot tell you how much display space it needs.

BEYOND THE BRICKS

Did you know?

The model, the history, the ideas

Inside the set

Stacked volumes

The sections alternate colours and shapes along the model’s height.

LEGO source

Small base

The composition develops mainly upwards.

LEGO source

Beyond the set

The stories, places and inventions behind your build.

A city goes underground

London’s Metropolitan Railway opened on 10 January 1863 between Paddington and Farringdon Street.

Read the full story

The Metropolitan Railway opened on 10 January 1863 from Paddington to Farringdon Street via King’s Cross. Much tunnelling used cut-and-cover construction. A relatively short route introduced a new way across the city, rather than the present network appearing all at once.

London Transport Museum

First-day success

The museum records around forty thousand passengers that day, long before futuristic toy cities.

Read the full story

The museum records about 40,000 first-day passengers on a three-and-a-half-mile railway. That describes the initial 1863 service, not today’s whole Underground traffic. Reading date, route length and passenger count together makes the historical scale more meaningful.

London Transport Museum

Expanded stories updated on 29 October 2026

Written by HowLongToBuild · Sources are linked with each story · Checked on 26 October 2026. Historical facts and story details refer to the context described.

BEYOND THE BRICKS

Keep the story going

Films, series, games, books and music connected to this model or its universe.

TV series

LEGO Ninjago: Masters of Spinjitzu

2011

Another adventure in the same universe, for before or after your build.

Find streaming services · Italy ↗

Title search on JustWatch: choose the result matching the title and year above.

Streaming: Italian catalogue. Check availability, languages and terms on the external service. Searches are labelled; book results may include different editions.

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THE COMMUNITY’S EXPERIENCE

What was it like to build?

Three separate scores from 1 to 10. For difficulty, 1 means very easy and 10 means very difficult.

No approved ratings yet. Scores are never generated by this site or inferred from the recommended age.

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Building tips from the community

Specific steps, useful checks and sticking points. Contributions appear after moderation, in their original language. Do not upload instruction pages or personal contact details.

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SET THE MOOD

A soundtrack for your build

· Selected for the subject and atmosphere

Howard Shore’s orchestral writing offers an epic, travelling character. It suits imagined landscapes and architecture without conflating different fictional universes.

OUR PICK

The Lord of the Rings: The Fellowship of the Ring - The Complete Recordings

Howard Shore

Narrative and cinematic

Spotify ↗Apple Music ↗

Your listening moodChoose a different soundtrack

Editorial suggestions, not official soundtracks for the set. External services may require an account or subscription; editions and availability can vary by country. Suggest another soundtrack →

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