noun
A person who visits places for sightseeing; somewhat formal and often used in written descriptions or announcements.
遊覧客がバスから降りて、景色を楽しんだ。
The sightseers got off the bus and enjoyed the scenery.
観光客 is the common word for 'tourist' in everyday speech. 遊覧客 is more specific to sightseeing excursions and sounds slightly more formal or literary.
Compound of 遊覧 (sightseeing) + 客 (guest, visitor). The exact historical derivation is uncertain, but the word follows a standard Sino-Japanese pattern.