As a source material, gondolas actually aren't just a random design-for-design's-sake frill. Gondolas are constructed to withstand weather changes, extreme cold and altitude shifts, making them a great base for a sauna placed in extreme weather conditions. Though they're lightweight, they're capable of heating to 212 degrees fahrenheit. Even Tony Curtis knows no one likes it that hot.
The interdisciplinary project involved electrical engineers, carpenters, metal workers and the German brand VAUDE, which has frequently been lauded for its track record of sustainable design. Even better, the saunas come Wi-Fi ready, so you can make sure all your friends know you have other friends that can afford the $8,500 price tag.
The Suanagondels are quite unique, but like every sauna, they're bound to be dominated by that hairy guy spreading his legs a little too far apart.