Shutterbugs from around the world have flooded this Flickr photo pool with images of locations past and present. We know structures and sky lines change over time. Yet, the evidence of their development or decay—or both—still provokes a thrill. Some of the portraits capture city avenues blitzed with natural disaster in one year, and blissfully serene decades later. In others, the earlier days reveal evidence of human habitation, while the latter ones expose a surprising ebb away from it. We liked many of the threesome shots, like the building that went from school (1910) to garage (1981) to private residence (2007). Rest easy, dear home. After all that change, it's also lovely to see parts of the world where the hands of time have yet to work any change whatsoever.