What are the best area to invest in land?

I bet you're about to tell us all about investing in land in, I dunno, Pune?

No. The dark side of the moon. Best investment. Second only to the potential ski slopes of Europa' Triton; Olympus Mons, Mars.

Best investment is a burial plot. It's yours forever

Ask some unlucky native American tribes, that's not the case. After a certain period of time, some Indian cemeteries have been dug up and/or moved to other locations because the land is considered too valuable to remain unbuilt upon.