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.
There are several ways to start the design process, depending on your nature and needs. You can start out by defining your goals, as precisely as possible, and then look at the site with these goals in mind. Or you can take the site with all its characteristics (both good and bad), and let goals suggest themselves. Of the two questions—"What can I make this land do?"—or—"What does this land have to give me?"—the first may lead to exploitation of the land without regard to long-term consequences, while the second to a sustained ecology guided by our intelligent control.