The barn looks like half of a red wooden boat and has a weather vane with a clam on top. There are also two brown wooden doors and a window that has hay sticking out of it. Right next to the barn is a silver grain silo. There is a white window with wheat sticking out of it.
Role in series
"The Sponge Who Could Fly"
One of SpongeBob's attempts of flight is to use a plane next to Old Man Jenkins' barn. However, the plane's propeller spins so fast that it detaches itself from the plane and cuts through the barn's silo, angering Old Man Jenkins and causing him to chase SpongeBob and Patrick away.
The barn and silo appear several times in the background, and start dancing around when Old Man Jenkins mentions a barn dance that night. The barn later gets destroyed after a tractor runs into it, and SpongeBob and Patrick have to raise the barn from childhood.
It soon reaches maturity and the barn dance commences.
After Mary's mother skydives out of a plane, she falls into a hay stack in front of Old Man Jenkins' barn.
"Biddy Sitting" is the only episode where the barn appears without Old Man Jenkins.