The most suitable location for sauna building is the one that is close to water sources such as rivers, lakes, ponds, founts or wells so that you would not need to take the water from a long distance. It is also important that the dirty water inclination would be proper and carefully considered. However, the water used in sauna should not get to water sources or contaminate those.
Bricked houses are steady and durable. According to building normatives, the durability of a bricked house is around 100 years, however there are even some Ancient Greek, Rome, South American bricked architecture monuments which are present till nowadays.