Viewing for enjoyment; appreciating scenery, art, or performances for pleasure (can be used as a verb with 'suru').
秋には紅葉の観賞に多くの人が訪れる。
In autumn, many people visit to admire the autumn leaves.
彼女は美術館で静かに絵画の観賞を楽しんだ。
She quietly enjoyed viewing paintings at the art museum.
庭で花の観賞をしながらお茶を飲んだ。
We drank tea while enjoying the flowers in the garden.