We all have pointed out how much the animation quality has improved over the seasons, but it's cool to also point out how much even the backgrounds and settings have changed for some locations over the years.
As pointed out by TwitterShy, Zecora's place has changed dramatically since it was first seen in season 1 after comparing her house's old design on the right to the one on the left.
Pretty cool, huh? Makes me wonder what other settings have changed so dramatically over the years? If I recall correctly, didn't Fluttershy's cottage get a makeover over time too?
Anyhow, just an interesting observation I thought you guys would find cool!