My wife and I (well, mostly I) built a 9-foot igloo up at Lomtjønna ("Loon Pond") about 4 km from our house up in Estenstadmarka, the city forest area out our back door. I sited it a little ways off of a groomed xc ski trail so that other locals could check it out and maybe use it.
I used the Icebox igloo tool that I've had since moving to Norway, given to me by one of my Vermont neighbors. The stars have to line up for me to get out there and build -- mainly plenty of snow and some time on my hands. We got about a half a meter of snow a while back and I used most of the ensuing couple of weeks to get some xc skiing in, so
I didn't get started until the snow had started to transform, making packing a little difficult. Put in a good 5 hours or so, mostly solo, on a Sunday to get through the first three courses, then kept pecking away at it over the next week, took the next weekend for some backcountry skiing, and finally finished it off last Thursday. Toward the end, where the blocks are overhanging, I was packing one block a day and then leaving it to set up, because the packing was so difficult.
We slept in it on Saturday night, with a little tour over nearby Liaåsen between dinner and bedtime. It wasn't too cold out and even warmer inside, but we found it a little damp and closed off from the outside world. I guess we could learn a little bit more about igloo living.
With better (excellent) building conditions it might be practical to build an igloo as a base camp, but for us it's mostly just for amusement, not very practical. Huts are a hell of a lot more comfortable -- and they have windows!
Here's an unsorted mix of photos, with my best night shot at the top.