Beginner
≈ 5 h 15 minSuggested range3 h 15 min – 7 h 45 min
Official LEGO® image · © LEGO Group and/or the respective rights holders. Source: LEGO Italy ↗
Friends · SET 42621
Heartlake City Hospital
Heartlake Hospital combines consultation, imaging and maternity with lift, helipad and characters.
- Pieces
- 1,045
- Release year
- 2024
- Theme
- Friends
- Set number
- 42621
- LEGO recommended age
- 7+
- LEGO retail price · Italy
- 99.99 €
Retired from the LEGO Italy catalogue when checked on 23 October 2026. Availability can change. Check the store for the latest information.
Retail price reported by the LEGO source for the stated market. Check the store for current price and availability; this does not establish the launch price. LEGO ↗ · Reference checked on 23 October 2026
Official English name verified at: LEGO English catalogue ↗ · Checked on 24 October 2026.
TIME TO BUILD
How long does it take to build Heartlake City Hospital?
A starting point for planning your build. Times for each experience level are editorial estimates, not measurements submitted by HowLongToBuild users.
Editorial model estimate · no verified measured building time
Intermediate
≈ 3 h 30 minSuggested range2 h 15 min – 5 h 15 minExperienced
≈ 2 h 15 minSuggested range1 h 15 min – 3 h 30 minBased 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
Building, lift, helicopter and equipment have tiny details within approachable structure. The three central durations are model-specific editorial assessments. Planning ranges extend approximately from 65% to 145%, rounded to quarter-hours; they are not measured experience-level averages or guaranteed limits.
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 Italy · Heartlake City Hospital ↗
This source documents the model’s features and components, not a timed build. No sufficiently verifiable individual building-time report has been identified for this set.
- LEGO building instructions · Heartlake City Hospital ↗
Set-specific instructions checked against the set number, piece count and year. The duration is an editorial assessment based on piece count, construction type, mechanisms and detail.
Checked: 23 ottobre 2026 · Method v1.0 · Limited reports; not a statistical average.
BUILT BY THE COMMUNITY
Yours could be the first building time.
0 reviewed solo building times.
No solo building times have been reviewed yet. You can still find editorial estimates under Suggested times.
Log your buildBuild your own story.
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Did you know?
Inside the set
Autumn’s visit
The story follows her arrival to try a new prosthetic arm.
LEGO sourceBetween departments
A working lift joins helicopter and therapy dog for different stories.
LEGO sourceBeyond the set
The stories, places and inventions behind your build.
A famous first hand
Röntgen X-rayed his wife’s left hand on 22 December 1895, showing her ring too.
Read the full story
The museum holds a photograph of the 22 December 1895 radiograph, not the original. It shows Röntgen’s wife’s ringed left hand; the original is in Munich. Distinguishing a document from its reproduction reveals how images helped communicate the experimental result.
Seeing inside without surgery
Doctors quickly used X-rays to inspect the body, preceding modern imaging departments.
Read the full story
After the 1895 discovery, X-rays enabled internal observation without exploratory surgery. By the 1930s, many British hospitals had dedicated departments and equipment. Experimental demonstration became established practice through the spread of instruments, skills and a new way of viewing the body.
Expanded stories updated on 29 October 2026
Written by HowLongToBuild · Sources are linked with each story · Checked on 23 October 2026. Historical facts and story details refer to the context described.
BEYOND THE BRICKS
Keep the story going
Films, series, books and music connected to this model or its universe.
LEGO Friends: The Next Chapter
Another adventure in the same universe, for before or after your build.
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.
Suggest a work or report a wrong connection →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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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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Sign in to contributeSET THE MOOD
A soundtrack for your build
· Selected for the subject and atmosphere
The Secret Life of Pets offers a comic character for small figures and everyday scenes. The affinity is lively domestic storytelling, not nature in general.
OUR PICK
The Secret Life of Pets (Original Motion Picture Soundtrack)
Alexandre Desplat
Rhythmic and livelyEditorial 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 →
Report a problem with this set →
YOUR NEXT BUILD
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Sets from the same theme or with similar suggested building times. The ranges shown are for intermediate builders.
Official LEGO® image · © LEGO Group and/or the respective rights holders. Source: LEGO Italy ↗
Official LEGO® image · © LEGO Group and/or the respective rights holders. Source: LEGO Italy ↗
Official LEGO® image · © LEGO Group and/or the respective rights holders. Source: LEGO Italy ↗