As most mini-brick construction aficionados will no doubt know, Lego is a Danish toy company which can trace its history all the way back in 1932. Manufacturers of their world-famous toy construction products, consumers both young and old have collectively spent countless hours snapping together small plastic bricks to form either a prefab structure or some fantastic design of their own. In the modern era, it would be tough to come across anyone lacking at least a passing familiarity with this innovative brand.

Though their line of products would be successful enough on their own, Lego has acquired dozens of pop-culture property licenses over the years and has made hundreds of toy sets dedicated to famous media brands like Harry Potter, Marvel Comics, and Star Wars. Dedicated Lego fans may prefer to sculpt their creations free of instruction, but lots of junior builders appreciate constructing sets with the help of an instruction manual.

That said, the company has, in the past, released a few sets which boggle the mind so thoroughly that it may actually take a certified engineer to put them together. Everyone is well aware of infamous mega-sets like the iconic Death Star from Star Wars or Lego’s elaborate recreation of London’s famous Tower Bridge.

It gets even more bizarre than that, of course: from an all-assembly-required sports car to a scene-for-scene recreation of Monty Python and the Holy Grail, Lego has come out with some really strange stuff over the course of their 86 year history.

30 LEGO Star Wars Porg

From the annoyingly childish Jar Jar Binks to the teddy bear-like Ewoks of Endor, the Star Wars films often seem to try to incorporate some sort of adorable character to invest younger audiences. In the case of 2017’s The Last Jedi, it was the puffin-like porgs of Ach-To. Though they may work well as plushies, their designs aren’t totally conducive to Lego structures. That, of course, didn’t stop the folks over at Lego from making an 811 piece porg set. It may be worthwhile for any hardcore fans of both Star Wars and Lego, but, on the whole, this set is ugly and slightly jarring. Lego, as evidenced by this set, is clearly willing to milk their more prominent licenses for all they are worth.

29 NHL Slammer Stadium Set

Seasoned Lego fans will likely remember the company’s professional sports gambit on which they embarked a short time after the turn of the millennium. It looked like a pretty neat idea on paper: a series of miniaturized football fields, soccer pitches, and hockey rinks on which could be placed movable pieces which could roughly replicate the feeling of playing foosball on an all but broken table. Unfortunately, Lego opted to nix their traditional Lego minifigures in favor of a weird set of heads which appear to have been modeled from the Easter Island monuments. What’s more, these sets were notoriously flimsy and didn’t stand up to the sort of wear and tear a typical child’s toy might experience.

28 Dr. Fox’s Magnifying Machine

Part of Lego’s child-friendly Unikitty line, Dr. Fox’s Magnifying Machine seems like a cool concept at the outset: a simple yet surprisingly functional microscope toy. While it is relatively innovative, it’s a bit expensive and difficult to come by these days, and it doesn’t even include a minifigure. What it does come with, however, is a pair of cheap paper glasses that we’re assuming users must wear at all times during the construction process. Lego also provides a set of four plastic tiles they expect builders to peer at under the makeshift microscope, but, given that they’re just small prints of simple images, it isn’t all that exciting.

27 LEGO Star Wars: Betrayal At Cloud City

Lego has proven time and time again that they are willing to mine any intellectual property of content until there is absolutely nothing left, and such is very much the case when it comes to their handling of the Star Wars license. While a surplus of these sci-fi toys may be wonderful for some dedicated collectors, a few of these sets leave the rest of us raising our eyebrows. Of the myriad props and sets seen in The Empire Strikes Back, why did Lego elect to make a scene-for-scene remake of Luke, Lando and friends’ run in with Darth Vader in Cloud City? This thing is detailed to a nearly unpleasant degree and simply begs an explanation.

26 LEGO Powerpuff Girls’ Bubbles Playground Showdown

Though there may be a select few out there clamoring for Powerpuff Girls themed Lego minifigures, this seems like a really odd inclusion to the Lego lineup. It doesn’t feature any truly prominent villains from the property and seems to come mostly pre-assembled, which sort of defeats the purpose of Lego in the first place. This may be a re-telling of a scene from the animated Cartoon Network series, but, even so, it’s such a weird piece of the show to adapt into a physical medium. The recent Powerpuff Girls reboot doesn’t seem to be all that well-liked, either, so this small set seems totally unnecessary.

25 LEGO Bugatti Chiron

For those who don’t have the money to buy a real-life high-performance concept luxury vehicle—which is just about everyone—Lego’s recreation may be the next best thing. While it is a neat concept and the final product does admittedly look pretty cool, this seems like a weird property for Lego to tackle. What’s more, in excess of 3500 pieces, this set is absolutely massive. It’s actually a 1:8 scale replica of the real car, which means that this thing could still hog up a serious amount of real-estate in the living room. Those willing to put a countless number of weekends aside to assemble this thing are certainly welcome, but buyer beware.

24 LEGO BrickHeadz Princess Leia Organa

The BrickHeadz line of products is a curious endeavor for everyone’s favorite Danish company: a clear attempt to rival the popularity of Funko’s Pop line of vinyl figures, these appealing Lego re-designs of famous characters are more garish to look at than the company probably intended. While the blocky, stylized cast of Pop characters comes off as cute and appealing, Lego’s BrickHeadz is just downright ugly. No product makes this more apparent than the BrickHeadz Princess Leia Organa set. This looks a bit like Star Wars ala Invader Zim, and it can’t have gone over all that well with the film series’ community of fans.

23 LEGO Statue of Liberty

To celebrate the turn of the century, Lego released a massive 2882 piece model of New York City’s Statue of Liberty. Now a rare and valuable collector’s item, this piece is insanely difficult to get your hands on in 2018. Though it may be a sought-after novelty, it doesn’t look all that much like the Statue of Liberty. In fact, at first glance, it looks like a poor 8-bit re-imagining of what the monument may look like were it drastically less detailed. Lego sets are much more competently designed today, and the company has since released a much-improved model of the same statue. Yet, though it looks like it was created by someone with only a rough idea of what the real thing looked like, this 18 year old Lego set remains one of the most highly coveted.

22 LEGO Mobile Police Unit

This one is a real head-scratcher: to commemorate the 1998 World Cup, Lego released a series of toys in keeping with the sporting tournament. However, among these sets was a miniaturized riot police unit complete with helmets, megaphones, and mobile detention cells. Soccer is known for its rowdy fans and occasional international brush-ups, but that doesn’t mean these things need to be turned into child-sized playthings. Curiously, the set was also endorsed by Shell Oil Company, which only made the whole thing that much more perplexing. While the concept may have been fine enough on its own, all these weird tie-ins made this a highly questionable release.

21 LEGO Star Wars Sandcrawler

In the past, Lego has put out some pretty awesome sets based on the Star Wars film franchise, and this replica Sandcrawler from the first movie is certainly one of the best. It’s also massive: with over 3,000 pieces, this would have taken the average pre-teen a considerable amount of time to construct. In fact, this thing may be too detailed. It comes with a functional droid processing station inside and offers enough room to store multiple Lego minifigures. Similar in scope to the awesome Lego Death Star model, the Lego Star Wars Sandcrawler is a formidable build which should only be attempted by those with a good amount of time on their hands.

20 LEGO Robot Command Center

1984 was a year of doom and gloom infamously foretold by George Orwell’s fictitious dystopian novel of the same name. Little did we know that his misgivings weren’t actually leveled at any political class or governmental system. In fact, Orwell penned the book to warn us in advance of this creepy Lego robot menace which was released that year. The design looks like some sort of visual illusion, and it’s tough to figure out exactly what this thing really is and what all of those extra bits and bobs are supposed to do. The imagination of a child may well be able to put this thing to good use, but the rest of us have little recourse other than simply scratching our heads. For retro Lego enthusiasts, this set is rather pricey these days, so it’s better off just forgotten.

19 LEGO Hogwarts Castle

Nothing quite captures the majesty of the Harry Potter books and films like a giant Lego model of Hogwarts Castle which would likely take any normal person around six months of on-and-off work to complete. With slightly over 6000 pieces included in this kit, Lego’s Hogwarts Castle is one of the largest official Lego designs ever to be released to the public. Viewers are never given a complete view of the castle in the movies, but this set appears to be as accurate a reconstruction as is possible with the medium. Children aren’t recommended to tackle this challenge… or even be around it. It would be a shame to see dozens of hours of work undone by a clumsy kid.

18 LEGO Technic R2-D2

Lego Technic is a series of sets intended for children sincerely interested in rudimentary engineering and construction. Akin to the erector sets of yesteryear, Technic models span a wide range of concepts, though must are based on some sort of real-world vehicle or piece of machinery. While plenty of these kits were great fun, this R2-D2 model, released in support of the first prequel film, left something to be desired. This wiry, skeletal droid only bears a slight resemblance to its on-screen counterpart, and the R2-D2 model made out of regular Lego bricks is superior to this one in just about every way.

17 LEGO Mr. Bunny

There’s definitely an appeal to some of the mini-builds Lego has released over the years. These rudimentary, visually simplistic designs can help introduce young children to the concept of Lego and allow them to develop the skills they will need for more advanced builds later on. That said, this Easter-themed build is a major letdown. The total pieces included in this kit can almost be counted on your fingers, and a terrible sense of buyer’s remorse sets in once the thing is complete and you realize that that’s really all there is to it. There aren’t all that many Easter-centric Lego sets available out there, but, even so, this design isn’t worth picking up.

16 Jack Stone Bank Breakout

Jack Stone was a mascot of sorts for Lego during the early 2000’s and was supposed to thrill kids with his action/adventure-themed scenarios. Given the fact that the company abandoned the property a few years after its conception, it is probably safe to assume that Mr. Stone didn’t go over all that well. Today, the Jack Stone Bank Breakout set stands as an embarrassing memory of Lego’s past. Much like the 1998 police van World Cup tie-in, this seems like an odd move from a marketing perspective. Stopping robbers is one thing, but did Lego really intend for kids to get behind the motives of a bank robber?

15 LEGO Star Wars Final Duel II

Who could forget the climactic final battle between Luke and Darth Vader at the end of 1983’s Return of the Jedi? It still stands as one of the most memorable moments in cinema history and helped to cement the Star Wars brand as an eternal pop culture staple. Considering the source material, why did Lego decide to release a totally underwhelming set based on the scene? They put out an entire scene-by-scene recap of the Cloud City encounter from The Empire Strikes Back, but, when it comes to the final clash between the Empire and the Rebellion, all fans were treated to was a small walkway and a couple of irrelevant minifigures?

14 LEGO Friends Buildable Hedgehog Storage

Debuted in 2012, Lego Friends is a series of child-friendly Lego buildables primarily marketed toward young girls. Many of these products concern traditionally gendered objects, themes, and colors, and all are intended to get girls in on the Lego fun at an early age. Yet, if anything, this Lego Buildable Hedgehog Storage kit is likely to deter people from the brand altogether. Though it is kind of neat in concept, the final product looks unnecessarily creepy and remarkably un-hedgehog-like. In fact, consumers who weren’t already aware of the product’s name probably wouldn’t be able to determine what creature that is supposed to be.

13 LEGO Kangaroo

Yet another so-called mini-build, this Lego Kangaroo set really proves how difficult it can be to make anything vaguely animal-shaped out of Lego bricks. Yes, it does sort of look like a kangaroo from the right angles, but is this really the best Lego could do? Is that little triangle poking out of the kangaroo’s pouch supposed to be a baby or a piece of candy corn? The worst aspect of this whole creation is the kangaroo’s big, shocked-looking eye that stares unblinkingly up at the builder with an implied sense of existential despair. There’s nothing wrong with the minifigures, Lego, please stick to making them instead of these abominations.

12 LEGO Ghostbusters Firehouse Headquarters

Lego fans will be happy to hear that this huge Ghostbusters-themed set is actually based on the original two films instead of the commercially-panned 2016 remake. That said, this set is clearly intended for older Lego fans who grew up with those classic movies, as this massive thing would take any normal kid years to build. Though the exterior would be enough work for two or three builders, the model comes with plans for a fully-decorated interior. With over 4500 pieces included with the kit, most Lego fans will probably be toiling away at this one until Bill Murray agrees to suit up for a true Ghostbusters 3.

11 Jack Stone Super Glider

Lego’s Jack Stone Super Glider is probably the laziest set the company ever produced. Containing a total of seven pieces—one of which was a piece of laminated paper with a Lego design printed on it—this build took all of ten seconds to slap together. What’s worse is that this thing was too heavy to really function as a glider and was more or less just another dumb prop in the Jack Stone series of dumb props. There may be a few stalwarts out there who genuinely liked this line of Lego products, but most fans who were kids when this series was popular probably have nothing but bad memories.