Montpelier: What stays and what goes?

My favorite re-photographs from Montpelier are posted above (for more information click the pictures). As you can see, it wasn’t just the landscape that changed. That turkey-avocado sandwich didn’t stand a chance with me behind the plate!

As for the historical images, these photos are my favorites from Montpelier because they show that while changes can be drastic for one area (the tall building in the left front) things can stay almost exactly the same in an area nearby (the brick building and tower to the right of the bridge). It made me start wondering about what places and things are more or less resistant to change and why that might be.

I’ve come up with a few hypotheses of my own but I’m curious to hear what ideas other people may have so: What do you think?