An acre isn't much land even if it's all arable. Like, really not much. 660x66 feet, according to quick googling.
Keepin mind I'm from the US, and Alaska in particular. I grew up on ten acres, for a point of reference. Our place now is on about 0.23-0.25 of an acre, and it feels claustrophobic even though it's pretty much all useable to some extent.