Understanding 'Calmness' in Context

In the tranquil garden, the golden sunlight streamed through the branches, casting intricate patterns on the ground below. The delicate petals of the flowers swayed gently in the breeze, their vibrant hues enhancing the serene environment. Nearby, a small pond mirrored the sky, its surface rippling softly as a gentle wind whispered through the trees. As the chirping of birds filled the air, the entire scene emanated a sense of calmness that made it a perfect retreat.

In this context, the word calmness most closely means: