LEGO is a popular toy brand that gets produced in large amounts worldwide. Over the years the LEGO Group have made a lot of LEGO sets but it doesn’t stop there, there’s a world of LEGO Video Games too! There’s a misconception that these games are just for children, if you have ever thought that […]
Top 10 of the Hardest LEGO Sets to Build

LEGO is a great way to exercise the brain and get the fine motor skills working, but have you ever wondered what the hardest LEGO sets to build were? I will take a look in to the biggest and most challenging sets released to date, I have even completed a social media survey to take a different look at what sets people find a challenge.
What Makes a LEGO Set Hard to Build?
There are a few factors that can make a LEGO set hard to build but don’t let this put you off. LEGO are expert designers and if the build is a challenge then it will be worth it once you are finished.
So back to the question, what makes a LEGO set hard to build…
- Lots of small fiddly pieces. This can result in you dropping them frequently and they can be hard to place.
- Length of time to build. Imagine a 10,000 piece set and you only have a small amount of spare time.
- Repetitiveness. Sets such as the World Map are amazing but very repetitive which can make it hard to keep enthused.
- Cost. This doesn’t constitute a hard build as such but its worth mentioning because a large LEGO set will cost several hundreds of $.
Social Media Survey Results
I reached out to our fans on Facebook, Instagram and Twitter to find out from their experience what have been the hardest LEGO sets they have owned and built.
The results from this survey can be seen below.

Top 10 of the Hardest LEGO Sets to Build
10. LEGO Volkswagen T2 Camper an (10279)

Set Number: 10279
Theme: Creator Expert
Year Released: 2021
No. Pieces: 2207
RRP: $179.99
This set was include on our list because of the social media survey.
The LEGO Creator Expert sets are commonly put under the “Hardest LEGO Set” umbrella, perhaps this shouldn’t be surprising… they have put the word expert in the theme name after all!
9. LEGO Harry Potter Hogwarts Castle (71043)

Set Number: 71043
Theme: Harry Potter
Year Released: 2018
No. Pieces: 6020
RRP: $399.99
Recognise this magical school? It is none other than Hogwarts of course! This LEGO set is a must have for any Harry Potter fan.
The set is great fun to build but be prepared to sink some time in to it. The perfect set to binge watch the Harry Potter series perhaps?
One challenge with this set is the 70 stickers that need to be placed, it may be fiddly to do but in doing this is prevented custom printed pieces being required which helps keep the overall cost down.
8. LEGO Ghostbusters Firehouse Headquarters (75827)

Set Number: 75827
Theme: Ghostbusters
Year Released: 2016
No. Pieces: 4634
RRP: $349.99
Ghostbuster fans cannot get enough of this LEGO set, its packed full of detail inside and out.
If you enjoy sets that have a high playability factor then this is going to be for you, they have carefully though about what would be in each room of the Headquarters.
7. LEGO Star Wars Millennium Falcon (75192)

Set Number: 75192
Theme: Star Wars
Year Released:
No. Pieces: 7541
RRP: $799.99
Some might say this is the perfect gift for any Star Wars fan.
With 7541 pieces for a while this was the largest set LEGO had produced and with plentiful minifigures too there was a lot to love about this set.
This set may be tricky to build but its been said to be very enjoyable and surprisingly not too repetitive.
6. LEGO UCS Imperial Star Destroyer (75252)

Set Number: 75252
Theme: Star Wars
Year Released: 2019
No. Pieces: 4784
RRP: $699.99
LEGO Star Wars fans dream of having their own Imperial Star Destroyer sitting on display (and quite rightly too).
This set uses a lot of plates to get that “arrow head” shape which sometimes proves tricky when you are putting plate upon plate.
However amazing this set looks it is very fragile so if you make it to the end without knocking pieces off I really advise that you put it on display away from anything that can potentially touch or knock it.
5. LEGO Bugatti Chiron (42083)

Set Number: 42083
Theme: Technic
Year Released: 2018
No. Pieces: 3599
RRP: $349.99
The LEGO Bugatti Chiron is a very popular set among the LEGO community, particularly adults who have an interest in cars.
This set isn’t huge in comparison to others on this list but with 3599 pieces its still a good sized set.
You will find this set fun to build as you quickly see shape of the Bugatti Chiron come together however as it can be with Technic sets at times this set will challenge your patience.
This beautiful car sits nicely on our hardest LEGO set to build list!
4. LEGO Taj Mahal (10256)

Set Number: 10256
Theme: Creator Expert
Year Released: 2017
No. Pieces: 5923
RRP: $369.99
This set is perfect for any LEGO enthusiast, the final result of the LEGO Taj Mahal is outstanding.
It has been said that this set can be very tedious to build and on certain parts of the build if the pieces are not perfectly aligned it will be visible after you have completed the set.
However the set has received great feedback and is one of the most popular LEGO Creator Expert sets so if you are up for a challenge this set it for you.
3. LEGO Land Rover Defender (42110)

Set Number: 42110
Theme: Technic
Year Released: 2019
No. Pieces: 2573
RRP: $199.99
This is a really popular set amongst the LEGO Technic community but it comes with a challenge.
Sitting at position 1 on our social media survey this set has caused a number of people a lot of frustration whilst building it, particularly when it comes to joining the two assemblies to complete the chassis.
This set is fiddly to build and at times you will wish you had a second pair of hands but if you can persevere you will enjoy the end result.
2. LEGO Colosseum (10276)

Set Number: 10276
Theme: Creator Expert
Year Released: 2020
No. Pieces: 9036
RRP: $549.99
Wanted to visit the Roman Colosseum but never been able to? Well look no further, why not build you own.
The LEGO Colosseum is another big set, with 9036 pieces made up mostly of small pieces it has found its place on this list not because of the technique or skill required but simply because its incredibly repetitive.
The build looks stunning one completed but when building this one just remind yourself, Rome was not built in a day and the same applies to your LEGO Colosseum!
1. LEGO Titanic (10294)

LEGO Titanic Details
Set Number: 10294
Theme: Creator Expert
Year Released: 2021
No. Pieces: 9090
Dimensions: 18″ / 44cm (H) | 54″ / 135cm” (L)
RRP: $629.99
If you are a fan of LEGO but also love history this set will be perfect for you.
Just looking at the picture of this set you can see why it sits at number 1 on the list of hardest LEGO sets to build.
The set is made up from 9090 pieces which means you will need dedication, determination and a lot of patience whilst building the set, however you have to trust me when I say it is worth it. The set is a work of art but do be warned it is huge!
Summary
If you really enjoy LEGO you shouldn’t ever be put off by how challenging a set may be to build.
At the end of the day LEGO are masters designers so if it is tricky its probably because the overall build benefits from it.
I actually recommend that you find sets that are challenging for you, it’s part of the fun and only adds to the satisfaction you get when you look back at your work of art.
So what set from our list of hardest LEGO sets to build will you get next?