Grand Canyon [wiki]. Words are not enough so I'll try not to use too many more.

It was simply breathtaking.

Job 38:⁴ “Where were you when I laid the earth’s foundation?  Tell me, if you understand.

⁵ Who marked off its dimensions? Surely you know! Who stretched a measuring line across it? ⁶ On what were its footings set, or who laid its cornerstone…

… 12 “Have you ever given orders to the morning, or shown the dawn its place, ¹³ that it might take the earth by the edges and shake the wicked out of it? ¹⁴ The earth takes shape like clay under a seal; its features stand out like those of a garment.