The Plains is a very common biome on Minecraft. It is flat and grassy with many Roses and Dandelions dotting the landscape along with Tall Grass. It is an ideal place for farm animals to spawn due to this flat grassy landscape.
Due to plains being flat, they are an very excellent place to build a house. Be careful, though; Endermen are easily spotted and aggravated without mountains or other structures to hide them. Caves also appear on the surface frequently. However, there is extremely less wood, so players might need a tree farm or a nearby Forest, Taiga, Jungle or other forested biome.