What Is the Biggest LEGO Set in the World? Top 10

Have you ever wondered which are the biggest boxed sets and building kits ever made by the famous Danish toy and game company?

We are going to show you 10 of the biggest LEGO sets ever made, which will let your creativity and imagination run wild for hours! ⏰

Be warned, though: most of these sets require a certain investment, but after all, when you love something, you don't count the cost!

The LEGO brick is a wonderful invention that has helped fuel countless creative minds around the world. 🧠

In January 1958, when the LEGO brick as we know it today was perfected, sets contained 100 bricks at most. The 1958 LEGO church was the biggest set, with 149 LEGO bricks.

In the 1980s, the biggest sets contained no more than 600 to 700 bricks. But with the arrival of major lines and licenses like LEGO Creator, LEGO Harry Potter and even LEGO Star Wars, things changed, as we are about to discover together. 📈

Many builders keep enjoying LEGO as adults (AFOLs), and bigger building sets with more polished designs have become much more common.

1) LEGO Millennium Falcon UCS 75192: The Biggest LEGO Set (Second Version)

The LEGO Millennium Falcon #75192 UCS contains 7,541 building bricks and special elements, which made it the biggest set the Danish company had ever made when it came out in 2017.

The UCS Millennium Falcon is the biggest set on our list, and it comes in a fairly gigantic box. It has since lost the overall record, though: as of 2026, the biggest LEGO set in the world is 21065 Sagrada Familia (12,060 pieces, 2026, $799.99), ahead of 31203 World Map (11,695 pieces) and 10307 Eiffel Tower (10,001 pieces). Even in Star Wars, the 2025 75419 Death Star (9,023 pieces) is now bigger. It also has plenty of exterior details that its predecessor lacked.

It also has several interior compartments:

• the main hold
• the rear compartment
• the upper gunner station
• the cockpit

You can set the model up to match the original trilogy (IV, V, VI) or the sequel trilogy of Star Wars (VII, VIII, IX) and fly the ship with the Han Solo best suited to the job (original trilogy or latest trilogy).

This gigantic set launched at $799.99 in the US, now retails for $849.99 (it is marked as retiring soon on LEGO.com, so do not wait too long), and takes about a day to build, the structure is so colossal. It all depends on whether you are an experienced builder or not. 🏗

2) LEGO Harry Potter Hogwarts Castle 71043: A Castle in Miniature Scale!

When it came out in 2018, Hogwarts Castle took the crown of the biggest LEGO set not tied to Star Wars. 🌠

It measures 58 cm (23 in) tall, 69 cm (27 in) wide and 43 cm (17 in) deep.

It recreates the iconic, cult settings of the Harry Potter saga and its famous castle. Almost as big and grand as the real thing you see again and again in the movies.

This set is a scaled-down version, since it comes with an assortment of microfigures.

The castle includes the Great Hall, moving staircases, classrooms and many more iconic places. 🏰

This set has a US retail price of $469.99 and is sold in LEGO Stores and on the LEGO Shop.

3) LEGO Taj Mahal: Spectacular Architecture!

The Taj Mahal contains an impressive 5,922 building bricks.

The set does an amazing job of recreating the ivory-white marble mausoleum. 🕌

The finished model, which took about a day to build (like the Millennium Falcon), measures 50 cm (20 in) wide and 40.6 cm (16 in) tall, which means you will need to find a special spot to display this giant model.

The first Taj Mahal (10189) was sold from August 2008 and retired at the end of 2010.

It was re-released in December 2017 with the addition of one single brick, a brick separator, at a US retail price of $369.99. That version was retired at the end of 2020 and now sells for about $440 new.💰

4) LEGO Harry Potter Diagon Alley: A Huge Set!

The LEGO Harry Potter line makes a second appearance near the top of this ranking with this superb recreation of Diagon Alley.

The set includes Ollivanders wand shop, Weasleys' Wizard Wheezes for all your joke supplies, Florean Fortescue's Ice Cream Parlour, Scribbulus Writing Implements, Flourish & Blotts bookshop and Quality Quidditch Supplies, where you can pick up a new broom. 🧹

Measuring more than a meter (over 3 feet) long, Diagon Alley can actually be split into four individual buildings that can be arranged in any order to create the alley of your dreams. ✨

The bright colors and varied shops make everything in this very big box fun, from building to display (and to play, too, if you want to play with it 😉)! Diagon Alley (75978) had a US retail price of $449.99 and was retired at the end of 2025.

5) 10179 Millennium Falcon UCS: The First Version!

Before the 2017 Millennium Falcon, there was already a fairly large replica of Solo's "piece of junk". With 5,197 small bricks, this set was the definitive version until recently.

The ship was one of the first Falcons built at minifigure scale and, as such, it measures more than 84 cm (33 in) long, 55 cm (22 in) wide and 20 cm (8 in) tall.

It includes the following minifigures:

• Han Solo
• Chewbacca
• Obi-Wan Kenobi
• Luke Skywalker
• Leia

When it was on sale between 2007 and 2010, the set sold for $499.99, but today a new sealed copy is worth around $3,100 on the secondary market (as we covered in our article on the most expensive LEGO sets in the world).

6) LEGO Ninjago City 70620: The Ninjago City Set

The LEGO NINJAGO Movie gave rise to some attractive sets, including this one: NINJAGO City. 🏯

This beautiful, colorful city stretches over three levels, all connected by a sliding elevator, a bit like the LEGO Star Wars Death Star.

On the lower level, you will find a fish market and a traditional house, as well as a peaceful bridge over a stream and a fishing boat.

The second level has a fashion store, a comic book shop and a restaurant.

On the top floor is Lloyd and Misako's apartment, along with a rooftop sushi bar and a radio tower. 🗼

With an impressive level of detail and lots of play features, this set should appeal to fans of NINJAGO and of big LEGO builds.

The set cost $299.99 in the US, but since it was retired at the end of 2019, its price has gone up like many other sets, reaching about $700 for a new copy

7) LEGO Star Wars UCS Star Destroyer: The Emblem of the Empire

Recreate your own opening sequence from Star Wars: A New Hope with this LEGO replica of the Empire's ruthless ship, the Star Destroyer, complete with a scaled version of the Rebels' Tantive IV.

This is LEGO's fifth, and biggest, attempt at producing a Star Destroyer. 🛸

This mighty ship features swiveling cannons, a tilting radar antenna, huge thrusters, intricate surface detailing and more gray bricks than you could ever imagine.

You will need plenty of space to display this model, because it stands more than 44 cm (17 in) tall, 110 cm (43 in) long and 66 cm (26 in) wide on its stand.

You will also need a large sum of money: the 2019 version (75252, 4,784 pieces) launched at $699.99, and since its retirement at the end of 2022 a new copy sells for about $1,200.

8) LEGO Ghostbusters Firehouse Review: Who You Gonna Call?

The iconic Ghostbusters headquarters has been faithfully recreated in LEGO for this colossal set made of 4,634 bricks. 🧱

In addition to the red brick building, the model includes a detailed interior and 9 minifigures:

• the 4 Ghostbusters (Peter Venkman, Raymond Stantz, Egon Spengler and Winston Zeddemore)
• receptionist Janine Melnitz
• Dana Barrett and Louis Tully (Peter Venkman's neighbors).
• a zombie driver 🧟‍♂️

On the scary side, there is a zombie driver and the library ghost, as well as Slimer and two other colorful ghosts (pink and blue).

The firehouse has a hinge that lets builders look / play inside and leaves just enough room for the ECTO-1 (sold separately) to fit in.

The set is no longer available on the LEGO Shop or in LEGO Stores, but you can find copies of this LEGO set on Amazon, eBay and other marketplaces. ⌨️

However, prices have skyrocketed: originally $349.99, it now sells for about $660 new.

9 LEGO Creator Tower Bridge Review: A View of London!

This set features London's most iconic bridge, with a working drawbridge.

This model measures more than 1 m (3 ft) long and 43 cm (17 in) tall. So you will need a fairly large space to display it, even though the set can be taken apart into separate modules to make it easier to move.

The bridge would not be complete without a few vehicles to cross it, so this set comes with micro vehicles (like the microfigures in Hogwarts Castle):

• a black London taxi
• a red double-decker bus
• a green car
• a yellow truck

Tower Bridge sold for $239.99 in the US, and after it was retired from the LEGO Shop at the end of 2018 its price went up (a new copy now sells for about $270).

You can still own a tiny fraction of this set by checking out LEGO Architecture London, which features the famous Tower Bridge! 🌉

10 LEGO Death Star 75159: That's No Moon!

This is the re-release of building set #10188. This 2016 revision of the Death Star (slightly rearranged) has a few new additions that raise the piece count from 3,803 to 4,016 pieces.

The new set includes Darth Vader's TIE Advanced, which has been updated with more pieces and more detail.

It also includes minifigures updated with the latest printing techniques, and it is one of the LEGO sets with the most minifigures (27 by Brickset's count).

The LEGO Star Wars Death Star sold for a hefty $499.99, considerably more than the $399.99 of the 2008 original. Retired at the end of 2020, it now sells for about $1,100 new.

That put the price per brick at about $0.12, more than many comparable LEGO sets.

Can the addition of minifigures with new printing and 213 extra pieces justify such a price increase? 📈

We strongly doubt it, but that is just our opinion.

If you love big builds, also check out our favorite LEGO Star Wars MOCs. We will leave you with this set. See you soon, loyal readers and brick enthusiasts! 🧱