Finland.
The word sauna is an ancient Finnish word referring to the traditional Finnish bath as well as to the bathhouse itself. It is a small room or house designed as a place to dry and wet heat sessions. Saunas can be divided into two basic styles: Conventional saunas that warm the air or infrared saunas that warm objects.
saunas make you so fat that you will explode.
Another word foe saunas is hot tub.
Zoki UK sell saunas. These include outdoor, indoor and infrared saunas. They offer a standard range of saunas or custom built. The saunas include a 10 year element guarantee.
I don't think anyone really knows the EXACT time that saunas we're made, but I know they were made a long time ago since saunas were very popular in Roman times, and Greek's were very "good" at making saunas, There is also records of old Saunas up at Finland.
Like other saunas, Infrared saunas will make you sweat. However, unlike traditional saunas, which do this with air or steam, the new saunas do so with infrared light. Benefits of infrared saunas include an increased ability to sweat. Many common infrared saua sessions is the equivalent of running 2 - 3 miles.
There are a number of places where one can find saunas for sale. One can purchase them from The Home Depot where there are many available to buy. They can also be bought from eBay and Saunas for Sale.
The infared sauna uses special infared beams instead of traditional methods. This is due to the fact that infared is not as damaging to the skin then the normal saunas.
Finland
yes
Sweden is the country that has next to no sunlight in 1999 they only had 20 minutes of sunlight in December, this is the closest a country has to no sunlight. Also the reason why Sweden has such a high suicide rate !