One thing is the same through the ages, and that is sex. Ok, so
the pictures from the time of our grandparents really isn't the same. It's black and white with low resolution and little to no retouching. But still it's really hot to see natural and hot sex, in any surroundings. And it really helps with my fantasies of other times. Sexuality, morality; all different.
See for yourself.
And don't you just love the little touches, like the man having his socks on?