Let's take a look at one of those Temples today: Temple of Mystery. Well-known Magic artist Noah Bradley was tasked with creating a temple that embodied the feeling of awe and mystery. Here's what the art description for the card said:
The Greeks believed that there was an end to the world where the sea drained off a sharp edge and formed an epic waterfall. The camera is facing this epic waterfall. At the top of the waterfall, there is a massive tree growing up out of the water. We can see water cascading down over its roots and into the abyss below. This tree is a shrine to the enigmatic god of horizons. The tree should be a fantastical version of an olive tree.
Let's see what Noah did with this art description. Here is his sketch:
Art by Noah Bradley
And here's the final art, which turned out awe inspiring indeed!