Like someone else said, Victorian England as a rich male would be nice Also, maybe 200 years in the future in this country as myself would be very interesting. Even more so than the Victorian era I'd say.
Another one for wealthy Victorian. Would like to be in the later Victorian period (1880 onwards) and preferably in London, although I'd be happy with Edinburgh. I grew up in a middle-class Victorian suburb in Edinburgh and did once wonder what life would have been like for the original owners.
1950s USA seems quite appealing too. It seems to have had vibrant character and been a time of real change and prosperity, unlike 1950s UK where everybody was broke and doing constant housework
London in the late 1970s as well. Would be well up for trying the dodgy fashions and experiencing the music when it was brand new
Downton Abbey <3 So Britain in the early 1900's, as an upper class woman. But I wouldn't want to live like that forever; I'd just want to see what it was like. I'd grab the chance to taste the life of the house staff, too.