Not as interesting as all of your armchair travels, but when I discovered the name of the street in Wales where my Grandma was born, I Googled it and saw the row of houses where she lived. That was exciting to me. I have never travelled overseas and most likely I never will so this is the next best thing for me.

When our house was newly built and for a few years afterwards if I went to street view and virtually drove past the house at the front and turned down the side street, the front view of the verandah was partially completed and the side view showed a completed verandah. A virtual TARDIS!