The 10 Biggest LEGO Sets You Can Buy in 2025

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.

@ign_deals The biggest LEGO set you can get has over 10,000 pieces, and it's probably not what you expected. #lego #bricktok #bricktoker ♬ original sound - IGNDeals

Star Wars: Venator-Class Republic Attack Cruiser

The Lord of the Rings: Barad-dûr

Harry Potter: Diagon Alley

Harry Potter: Hogwarts Castle

Ninjago: City Markets

The Lord of the Rings: Rivendell

Star Wars: Razor Crest

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.

Death Star

This thing is massive and heavy; one should not build this set without reinforcing the shelf that it will eventually display it. It's fragile, and it would not survive a fall. The LEGO Death Star is six floors tall and nearly three feet wide. It contains a working elevator to all of its floors, which operates by the turn of a crank. It's an ambitious build, but it's also decadently expensive, costing close to $200-$300 more than the only two sets with higher piece counts.