Tourism is the expression of all the artistic activities and situations which develop when one artist is on the way to another and on the spot where they meet each other.
Tourism is the execution of the mail-art concept.
The activities of the correspondance-artist, mail-artists and the networkers, with the assistance of the postel system, developed worldwide relationships among artists.
The tourist doesn't trust the postal system.
However, he uses mail-art and its developed channels before starting... H.R. Fricker