We should note that all of these places of thermal extremes (Finnish saunas, Japanese hot baths, American beaches and mountains) have their opposites close at hand. There are possibly two reasons for having the extremes right next to each other.
The first is physiological: the availability of extremes ensures that we can move from one to the other to maintain a thermal balance.
The second might be termed aesthetic: the experience of each extreme is made more acute by contrast to the other.
Works of art which have great life often have intense contrast within: rough/smooth, solid/void, loud/silent, empty/full. It is the difference between opposites which gives birth to something. Contrast is what often gives other principles their degree of life – the intensity of the boundary, the markedness of the alternating repetition.
Contrast strengthens centers by making each a deeper entity of itself, and thereby giving deeper meaning to both. It is, at its simplest, what allows us to differentiate. But meaningless contrast remains meaningless. It is only when centers are actively, mutually, and meaningfully composed that it acts to deepen the whole.
"The combination of a worldwide shift to GM crops and rising global temperatures led to a series of global disasters, destroying many natural resources and causing a permanent environmental imbalance. Earth’s leaders make the choice to outsource all food production to off-world corporately owned farm planets, known as ‘flatlands’." — Luke Sanger on the album Onyx Pyramid
The music, Sanger writes, is a kind of fictional soundtrack for a landscape of offworld megafarms, where a human skeleton crew has been reporting “auditory hallucinations” amplified by the effects of an artificial atmosphere. Audio scifi.