Haikus

Haikus are short, unrhymed poems, often about nature.  The form of this poetry originated in Japan. Its tone is often thoughtful, but sometimes can be used as playful. A haiku is three lines with 5 syllables in the first line, seven syllables in the second line, and five syllables in the last line.

http://www.haiku-poetry.org/famous-haiku.html

Winter seclusion -
Listening, that evening,
To the rain in the mountain.

- Issa