The Barn

"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."

"The Barn" is a large barn located up on a hill outside of Beach City. It was first seen in "Space Race" and is last seen in "Barn Mates". Peridot and Lapis Lazuli live on the barn together.

Description
The Barn is a large red barn with a black roof located uphill and across the bay from Beach City. It's 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 are hats bowling, materials, a stuffed dinosaur, paint, and many more. There is a sign at the front of the barn that says UUU space travel. A picture of the couple is hung on the back wall. In both appearances, the shed has 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 has been mostly cleaned out due to that large amount of parts the Crystal Gems have used to build machines.

"Space Race"
Steven and Greg use the materials stored inside of it to build a spaceship. The barn was also used to house the final version of the spaceship, The Universe Mach 3, mostly built by Pearl.

"Back to the Barn"
Pearl and Peridot build their robots here for a competition to see who would lead building the drill to defeat the Cluster.

"Too Far"
Pearl, Peridot, and the Gems are continuing to build a Cluster Drill and are shown to have made some progress, but are severely set back by a while trying to adapt an injector drill.

"The Answer"
Garnet tells Steven how she came to be a Crystal Gem in the barn.

"Steven's Birthday"
Steven and the Crystal Gems celebrate his birthday at the barn.

"It Could've Been Great"
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.

"Message Received"
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.

"Log Date 7 15 2"
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.

"Super Watermelon Island"
The barn appears in the beginning, when Steven wakes up and tell the Gems to go to the island.

"Gem Drill"
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.

"Same Old World"
The gems prepare to leave the barn and return to Beach City, packing their things in Greg's van. The tarp seen in "Gem Drill" is removed. Peridot decides to live in the Barn indefinitely and promises to repair the hole made by Peribot. 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.

Trivia

 * There appears 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".
 * It seems a Warp Pad is close by for the gems to warp away.