I'd love to see the interior of our old houses. My parents lost their first house when I was 9, and due to my melancholy nature back then, it haunted me. I'd regularly revisit it mentally before I went to sleep, trying to make sure that I didn't forget any detail. That house lived in me for a long time.
I'd sometimes ride my bike and visit that part of town just to see the old house, but the new owners changed it dramatically and it was hardly recognizable. The inside must have long since been completely redesigned.
Funnily, I just looked it up and the house is now owned by someone with the same last name as I...
These days, every now and then I launch Google Map and take a virtual walk in my old hometown. The part of the town where the old house was located isn't mapped yet, but it is cool to see my grandparents house as well as the last house my parents bought before my mother died in the 90s. I worked on that house quite a bit, doing landscaping, planting trees, painting it and taking part in all the renovations.
It's was a bit of a shock to see trees that I planted back then which didn't even reach my shoulder the last time I was there that are now taller than the house.
I do wish I could take a sneak peak though it may be preferable to just keep the memories intact.