Me, I like to look at pictures of lonely warehouses in the night with a single light on the outside. There are no doors or windows; just a square building and a cold garage door. The only light comes from your vehicle and the warehouse. You, your car, the warehouse, and the night are the only things in the world right now. The warehouse is normally surrounded by lots of gravel. Its very surreal. This is probably a result of the two and a half hour trips I took to my father's house every other weekend as a child; the trip always took us through a lot of remote places in the mountains, and I can remember everyone of those warehouses.
Aside from that, I like to look at pictures from the year I was born, the year after, and four years before. Its very neat to look at something you know you were there for, yet can't remember, and to see things that came into existence shortly before you.
Lastly, I like not-so-old but still out dated technology, especially if it has knobs and wood paneling. Things like http://a1.ec-images.myspacecdn.com/images02/92/5af88fe0b93d41a580627b9d5ef9c48e/l.jpg television set. This kind of stuff also relates to the above paragraph, as this type of technology was commonplace in the year before, during, and after I was born.