This is the 1604th most frequent Russian word.
туристов
"Tourists."
The word 'туристов' is the genitive plural form of 'турист', meaning 'tourists'. It's used here to describe the group that gathered.
На площади собралась группа туристов.
A group of tourists gathered in the square.
Here, 'туристов' is possibly mistakenly used in place of 'туристам', which would be the correct dative plural form to fit the verb 'рассказал'.
Гид рассказал туристов о всех достопримечательностях города.
The guide told the tourists about all the sights of the city.
The word 'туристов' is in the accusative plural form of 'турист', serving as the object of our meeting.