Gray Line Worldwide is an international sightseeing company that consist of local sightseeing operators around the world. The company was founded in 1910 and operates worldwide through independent operators it calls "licensees" with a presence in most of the world's most popular sightseeing destinations.
Gray Line Worldwide is an international sightseeing company that consist of local sightseeing operators around the world. The company was founded in 1910 and operates worldwide through independent operators it calls "licensees" with a presence in most of the world's most popular sightseeing destinations.
Source: Wikipedia "Gray Line Worldwide" · CC BY-SA 4.0
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