City, or another scale art piece
No you are not looking at a Star Wars mock up, a Peruvian indigenous temple, or a long vanished city. You are in the middle of Michael Heizer's project simply called "City". Started in 1972 and still ongoing, this art piece will be the largest sculpture ever built. Recently designated as a National Monument, you can classify "City" as land art, brutalism or even architecture; in any case, how awesome is this project?!