Refers to a person who goes to see something, such as a tourist attraction, event, or spectacle. Often used for onlookers at an incident or visitors at a famous place.
See also: 見物人 (けんぶつにん)
Many onlookers gathered at the accident scene.
祭りには大勢の見物客が訪れた。
A large number of spectators visited the festival.