When it comes to LEGO sets, high piece counts and high prices often go hand-in-hand. For years, the standard LEGO pricing came out out to approximately 10 cents per brick, which meant a 5,000-piece set would probably cost $500, give or take. But the modern era has made this formula a bit more nuanced. Partnering with a third-party (like Disney, for example) will drive the price higher. And sometimes, the uniformity and commonness of the pieces will make the price lower.
So, even though this list and our list of the Most Expensive LEGO Sets have some significant overlap, it’s not identical. Here, in ascending order, are the 10 Biggest LEGO Sets You Can Buy, as measured by piece count. We’ll be updating this list, but it’ll probably be awhile before another set tops 10,000 pieces.
Biggest LEGO Sets You Can Buy
The above is a quick TL;DR of the list. If you want details about any of the sets, keep on reading.
Star Wars: Venator-Class Republic Attack Cruiser
There are some big Star Wars LEGO sets out there. This model of the massive Venator-Class Republic Attack Cruiser is over three-and-a-half feet long, and it captures the power of the Republic Army during the Clone Wars – a power that would one day be absorbed by the Galactic Empire years later. The model comes with a display stand and minifigures of Captain Rex and Admiral Yularen.
The Lord of the Rings: Barad-dûr
Close to three feet tall, Barad-dûr is topped with a glowing fire eye, and spiky, intimidating architecture covers the entire structure from base to peak. That makes it one of the biggest of the growingn list of Lord of the Rings LEGO sets. Each piece of the tower slides and stacks onto the others, like a grotesque wedding cake. The model opens in the back to reveal numerous, detailed interiors, including a dungeon, an armory, and Sauron’s throne room. We reviewed this set at the time of its launch; check out our We Build feature and photo gallery of the entire build process.
Harry Potter: Diagon Alley
Of all the brand partnerships, the LEGO Harry Potter one may be the most fruitful. In the same manner that you can build a massive LEGO Hogwarts Castle by combining multiple sets, you can also build a massive LEGO Diagon Alley by slowly buying and building all the notable stores. And this set is how to get started on that magical (albeit expensive) journey. You get four large buildings in the Diagon Alley set, which encompass seven different magical boutiques: Ollivanders Wand Shop, Scribbulus Writing Implements, Quality Quidditch Supplies, Florean Fortescue’s Ice Cream Parlor, Flourish & Blotts, Weasleys’ Wizard Wheezes and the Daily Prophet.
Harry Potter: Hogwarts Castle
Scaled down to microfigure proportions, this recreation of Hogwarts Castle is over two feet tall and a little under two feet wide. In September 2025, it will have been 7 years since it first launched – an eternity in LEGO land, especially when some sets retire in under two years. It contains 27 microfigures, but the real treat, at least for Potter afficionadoes, are the four full-size minifigures of the Founders: Godric Gryffindor, Helga Hufflepuff, Rowena Ravenclaw, and Salazar Slytherin.
Ninjago: City Markets
There are also plenty of LEGO Ninjago sets to collect for fans of the Japan-inspired offshoot. The City Markets are crammed with activity and people (22 minifigures in all!). This is not the small-town nostalgia of LEGO’s annual modular buildings. This is urban congestion, with people living on top of one another. Do you want to do karaoke? Eat sushi? Ride a cable car? Buy something sweet? Play pool? You can do it all on four floors in half a city block.
The Lord of the Rings: Rivendell
Rivendell is not only one of the biggest LEGO sets for adults ever made. It is one of the best designed and the prettiest, with elven architecture that looks too light and delicate to be real. From the iconic gazebo to the bridge over the River Brunein; from Bilbo’s study to the Council of Elrond; there’s so many movie references, so many cool little details for the discerning eye. Check out our review and photo gallery of this set.
Star Wars: Razor Crest
The Razor Crest hasn’t been active since Gideon destroyed it back in Season 2 of The Mandalorian. But its design, and the narrative weight of those first two seasons, have made it iconic; it is the most recognizable starships from the post-Lucas Star Wars era. With a Mandalorian movie on the way, this is one set that isn’t going to lose popularity anytime soon. It includes a minifigure-sized carbonite freezing chamber, a weapons cabinet, and an escape pod.
Star Wars: Millennium Falcon
The oldest LEGO set on this list has been available for purchase since 2017 – a time when LEGO was just dipping its toes into the adult demographic. That it is still flying off the shelves is proof how timeless and bar-setting this set truly was and continues to be. Close to three feet long and two feet wide, the entire Falcon mounts on a stand that allows it to ‘fly’ at a dramatic angle.
Titanic
The excessive piece count is almost the point of the ‘unsinkable’ Titanic, which was the largest ship ever built when White Star Line launched it in 1911. It’s best known today for its tragic sinking on its maiden voyage, in which 1,500 people died. But this four-and-half-foot long build remembers Titanic the way she was, with all her first class decadencies in tact. Check out our review and photo gallery.
Eiffel Tower
The Eiffel Tower is composed of 10,001 pieces, which sounds terrifyingly expensive on its face. But it’s actually $630 instead of the $1000 that conventional wisdom would dictate. Nearly five feet tall, with observation decks and elevators that run on cables, this is the biggest LEGO set by piece count in the company’s history, beating even the 9,036-piece Roman Colloseum that retired at the end of 2023.
What’s The Best Way To Get LEGO Sets On Discount?
LEGO piece counts and prices often go hand-inhand. So what’s the best way to get expensive, big sets for cheaper?
First, join the LEGO Insiders program, which gives you points for every purchase that you make from the LEGO Store. Those points translate into money, which you can use towards the purchase of an expensive LEGO set. There are also select promotions – Star Wars Day, for example –where purchase of certain LEGO sets will garner double the points. So keep an eye out for deals.
Also, check Amazon, Walmart, Target, Barnes & Noble, and other places where LEGO are sold. Extra inventory, especially when a set’s about to be retired, can often go for cheap. And these online and brick-and-mortar outlets often have specific days (Amazon Prime Days, for example) that offer deep discounts on sets that would otherwise sell at retail price.
Kevin Wong is a contributing freelancer for IGN, specializing in LEGO. He’s also been published in Complex, Engadget, Gamespot, Kotaku, and more. Follow him on Twitter at @kevinjameswong.