While I see where you’re coming from, there is nothing sad about it at all. It’s actually quite beautiful that our world just keeps moving on. Impermanence is the only constant here and while I t is important to honour our history as humans, at what point do we draw the line between preservation and progress? Also, it’s a parking lot now but won’t always be a parking lot. 50,100 or even 1000 years from now, this same spot could become abandoned and overgrown with trees and nature (a random example scenario). Therefore coming full circle.