Beginner
≈ 4 hSuggested range2 h 30 min – 6 h
Official LEGO® image · © LEGO Group and/or the respective rights holders. Source: LEGO Italy ↗
Architecture · SET 21020
Trevi Fountain
The Trevi Fountain combines a pale facade with a small blue basin.
- Pieces
- 731
- Release year
- 2014
- Theme
- Architecture
- Set number
- 21020
- LEGO recommended age
- 12+
- Historical price in EUR
- Not verified
The historical euro price has not been verified. No current offer or conversion from another market is shown.
Official English name verified at: LEGO English archive ↗ · Checked on 26 October 2026.
TIME TO BUILD
How long does it take to build Trevi Fountain?
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
≈ 2 h 45 minSuggested range1 h 45 min – 4 hExperienced
≈ 2 hSuggested range1 h 15 min – 3 hBased 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
Small pieces, symmetry and dense facade decoration. A complete first build by one person. Older sets may use unnumbered bags, so finding pieces can take longer. The broad ranges are editorial assessments, not measured 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 · official set archive ↗
Source for name, pieces, year, age, model and manuals; not a timed build.
- LEGO · set-specific manual ↗
Original set instructions considered alongside the structure when estimating the build. Not a timed community contribution.
Checked: 26 October 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.
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Create a free account →BEYOND THE BRICKS
Did you know?
Inside the set
Microscale water
Blue elements distinguish the basin from the architecture.
LEGO sourceColumns and recesses
Repetition and depth evoke the Roman monument.
LEGO sourceBeyond the set
The stories, places and inventions behind your build.
Not Neptune
The central figure represents Oceanus on a shell chariot drawn by one restless and one calm horse.
Roma CapitaleA papal competition
Clement XII launched the fountain competition in 1732, selecting Nicola Salvi’s design.
Roma CapitaleWritten by HowLongToBuild · Sources are linked with each story · Checked on 26 October 2026. Historical facts and story details refer to the context described.
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
Trevi Fountain · Selected for the subject and atmosphere
Piano patterns and small shifts of musical light accompany façades, proportions and architectural details. The pairing follows the act of building, with its proportions and small details.
OUR PICK
Debussy – Rameau
Víkingur Ólafsson
Piano · colour and small contrastsTry a different atmosphere
ANOTHER MOOD
Ambient 1: Music for Airports
Brian Eno
Ambient · minimal and relaxedEditorial 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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YOUR NEXT BUILD
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Official LEGO® image · © LEGO Group and/or the respective rights holders. Source: LEGO Italy ↗
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Official LEGO® image · © LEGO Group and/or the respective rights holders. Source: LEGO Italy ↗
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Official LEGO® image · © LEGO Group and/or the respective rights holders. Source: LEGO Italy ↗