Answer: They were a random selection of my personal photos which appeared on a newly-created web page.
Buckingham Palace in London
A bookstore in Portland, Oregon
The Friday market in a Sri Lankan village
Zebras on the Kenyan savannah
The Brooklyn Bridge
Two seagulls on a BC Ferry
I've often discussed the advantages of having an e-collection of photographs. Old paper photos are always stuck in particular album next to others shot at the same time. Online photos, on the other hand, can be searched for and combined in a myriad of ways. On the page below you'll find six entirely random photos from a collection which is currently approaching 1,900. In real life it'd be most analogous to throwing several thousand photos into a pile in the middle of the floor and fishing out just six.
The fun only starts when you 'refresh' and a new, random selection appears. I just might have given you a way to waste the next five minutes of your life. Click the screenshot to load the page in a new window. Then, bookmark it.