Vatican is 3rd largest landowner in the world.

Well the older you get the more crap you acquire...

The middle eastern royal families own most of the lands in the world.

Which Middle-Eastern royal families?

if you click on the link to read the breakdown,
you'll see there is a major difference between
what the RCC owns and these titular heads of
state "own". For example, everyone knows the
Queen of England does not really "own" all
of Great Britain and Canada. Yes, the Arab
ruling families own many millions of acres,
but they are virtually all within their own
country. Like saying the House of Saud "owns"
all the land in Saudi Arabia. Same with the
African countries on the list.
But the Vatican's over 177 million acres is scattered
all over the globe, and is not large tracts of undeveloped
land, but developed actual real estate.