How big is land in Decentraland?

I'm curious to know, just how expansive is the digital realm of Decentraland? As a platform that's pioneering the way for decentralized virtual worlds, I'm eager to understand the scale of the land available for users to explore, build, and trade. Are we looking at a vast, unlimited canvas or is there a specific, measurable size to this digital landscape? I'm particularly interested in hearing about the dimensions and potential for growth within this exciting new frontier of cryptocurrency and finance.