My aunt and uncle had a great love for aviation and each other. They cherished the years they spent together, and they held on to every belonging they ever owned— kind of like me and my storage shed... I'm starting to think our family has a problem.
|—Greg, "Space Race"|
The Barn was a barn, formerly located up on a hill outside of Beach City. It was first seen in "Space Race" and was the main setting of the show from the episodes "Back to the Barn" to "Hit the Diamond". In "Raising the Barn", Lapis Lazuli takes the barn as she leaves Earth, and puts it on the moon. It was destroyed in "Reunited" after Lapis drops it on Blue Diamond.
The Barn was large and red with a black roof located uphill and across the bay from Beach City. It was filled with a large variety of scrap, also including several airplane engines and parts inherited from Greg's late aunt and uncle. Some other contents were hats, bowling balls, materials, a stuffed dinosaur, paint, and much more. There was a sign at the front of the barn that says UUU space travel. A picture of the couple was hung on the back wall. In both appearances, the shed provided copious amounts of materials to build highly advanced machines, such as a nearly space worthy rocket and two combat ready robots. As of "The Answer", the shed had been mostly cleaned out due to that large amount of parts the Crystal Gems have used to build machines. In "Beta", it was seen that Lapis and Peridot had remodeled the barn, to an almost exaggerated extent. Since Peridot considered that barn to be her home, her bubbles were redirected to it once warped. It was taken to the moon by Lapis Lazuli in the episode "Raising the Barn", where it stayed until it was dropped on Blue Diamond and was destroyed.
The Gems return to the barn to use materials to build a drill in order to defeat the Cluster. Pearl and Peridot build robots using spare parts for a competition to see who would lead building the drill.
The Gems are continue to build a drill and are shown to have made some progress, but are severely set back by a while trying to adapt an injector drill.
Garnet tells Steven how she came to be a Crystal Gem inside of the barn.
Steven and the Crystal Gems celebrate his birthday at the barn.
The Barn is seen once again (at night) as the Crystal Gems and Peridot head to the Moon Base to get the coordinates for the location of the Cluster.
Steven, distrustful of Peridot, locks her inside a car in the barn. She escapes the car and uses her robot to leave the barn by crashing through one of the walls.
The Barn is the setting of many of the flashbacks seen in the episode as Peridot is trying to learn more about life on Earth, the other Gems and Steven during the time they spent working on the drill. The hole in the wall caused by Peridot in "Message Received" remains during the present day parts of the episode.
The barn appears in the beginning when Steven wakes up and tell the Gems to go to the island. The Gems use a Warp Pad near the barn to reach the island.
The barn appears in the beginning and the end. It can be seen that the gems have covered the hole in the wall with a tarp. The drill leaves a hole in the ground near the barn.
The gems prepare to leave the barn and return to Beach City, packing their things in Greg's van. The tarp that was seen in "Gem Drill" is removed. Peridot decides to live in the Barn indefinitely and promises to repair the hole made by herself. At the end of the episode, Lapis decides to live in the barn as well, but becomes upset when she learns Peridot is also living in the barn.
Steven and Peridot both want Lapis to stay at the barn, so they attempt different good deeds around the barn to win Lapis over and forgive Peridot. In one of their attempts, Peridot and Steven seal the hole they made and filled it with water, making a pool from it. However, a Roaming Eye appears and follows Peridot, resulting in Lapis using her hydrokinesis (with water from the pool) to flick the Eye into the ground. By the end of the episode, Lapis appears to have forgiven Peridot.
Five Ruby soldiers climb out of the Roaming Eye and are searching for the leader of the Earth mission. Garnet unfuses and Ruby tells the other Rubies that the leader of the Earth mission is not in the barn, and the Rubies decide to look there, not seeing it before. The Gems disguise themselves as humans and face off against the Rubies in baseball; if the Rubies win they can search the barn but if they lose they have to leave. After the game the Rubies reveal that they are looking for Jasper and Steven tells them that she is on the planet Neptune, and the Rubies head out to Neptune.
Since they began living together, Peridot and Lapis have extensively remodeled the barn, most notably embedding the water tower into the hole in the wall to create an aquarium, and creating a makeshift loft out of the barn. They have also decorated the interior with pieces of art (or "meepmorps", as Lapis calls them) made from objects commemorating memorable events since the two arrived on Earth.
Steven, Amethyst, and Peridot were surprised that the Rubies were back.
The barn's interior is briefly seen at the end of the episode, after Peridot sent a bubbled corrupted gem there.
When Steven is outside the barn, he goes to the new farmland behind the barn, to find Lapis Lazuli and Peridot. Later, it is revealed that Greg's cousin Andy has claimed possession of the barn. However, he allows the two Gems to continue living there.
The Gems take the Roaming Eye to the Barn so Peridot can check to make sure that everything is functioning properly, and that deep space travel inside the ship is safe for Steven's organic body.
Steven takes Navy to the barn, where he hopes Peridot and Lapis will take her in. The trio uses different features from the barn to show Navy how life is on Earth. Peridot and Lapis also tell Steven and Navy that they began to call the inside of the barn their "Gem Cave". The Roaming Eye is shown to be stationed outside of the barn, wrapped in Christmas lights before it was stolen by Navy.
Lapis and Peridot are shown in the beginning of this episode in front of the Barn trying to calculate how to bring all of their belongings into space with them. Lapis then comes up with the idea of lifting the barn out of the ground with the water from the smaller than average lake. Despite this plan, Peridot later tells Lapis in this episode that she does not want to leave Earth, and tries to convince her to stay too. Once Lapis rejects, she proceeds to turn around and lift the Barn out of the ground once again, and hesitates before leaving, taking the Barn with her.
Peridot attempts in vein to reintroduce plantlife to the Prime Kindergarten as a distraction from her feelings over Lapis leaving with the barn. When it fails, it only makes Peridot feel worse until Amethyst and Steven convince her to try gardening elsewhere.
Lapis returns with the Barn during the fight between the Diamonds and the Crystal Gems. She drops it on Blue Diamond in an attempt to stop her, which destroys it.
When Era 3 begins the former Corrupted Gems, Bismuth, Peridot, and Lapis Lazuli build a small community for Gems on Earth, naming it Little Homeworld, in the part of the countryside where the barn originally resided.
- There appeared to be an Apollo Lunar Module in the background.
- Greg noticing the problem of his U-Stor and his aunt and uncle's barn is a reference to the real world psychological condition "hoarding", where people hold onto everything and don't throw anything away. It appears to run in the family, as Steven's room is also messy.
- The barn appears in each episode of the fourth StevenBomb.
- The barn is the main area of operation for what the Crewniverse have informally called the "The Barn Arc".
- A Warp Pad is close by for the Gems to warp away, as first seen in "Super Watermelon Island".
- In the episode "Mr. Greg", it is revealed that the barn is riddled with termites.