The Light FantasticThe Colour of Magic- Twoflower (Wikipedia)
Twoflower is a native of the Agatean Empire, on the Counterweight Continent, living in the major sea port of Bes Pelargic where he works as an “inn-sewer-ants” clerk where he calculates the level of insurance premiums. The first tourist ever on the Discworld, he wrote “What I did on my Holidays” after his return to the Empire.