One who goes sightseeing; one who goes around to look at sights or see things of interest; a tourist.(noun)
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Use "sightseer" in a sentence
"Jon Levy/AFP/Getty Images Policemen rushed to control pedestrians around the Empire State Building after a Palestinian gunman went on a shooting rampage on the 86th floor observation deck on Feb. 23, 1997, killing one sightseer and wounding six others before killing himself."
"Getty Images A sightseer made a home movie as others enjoyed the view from the top of the Empire State Building in 1952."
"Perched on a promontory of chalk cliffs overlooking an Atlantic estuary, the tiny fortified fishing village of Talmont-sur-Gironde, around 450 kilometers southwest of Paris, commands a site sufficiently dramatic to impress the most jaded sightseer."