“A native American sauna has been discovered in Mexico City dating back to the 14th century.
The so-called ‘sweat lodge’ was found at an archaeological site in the neighbourhood of La Merced in Mexico City.
It is believed the room was used to purify the body of locals in various circumstances, including for medicinal purposes, religious rituals and childbirth.”
View the whole story here: https://www.dailymail.co.uk/sciencetech/article-7916287/Native-American-14th-century-sweat-lodge-discovered-Mexico-City.html