tourist party; sightseeing group
Refers to an organized group traveling together for sightseeing, such as a tour group or excursion party.
観光団がバスで京都の名所を回った。
The tourist party toured Kyoto's famous spots by bus.
ツアー is a more general loanword for any organized tour, while 観光団 specifically emphasizes a group of people traveling for sightseeing.
旅行団 is a broader term for a travel group, not necessarily focused on sightseeing.
Compound of 観光 (sightseeing) and 団 (group, party).