my project is a recommendation system for tourism and I need a dataset by which I will find out the similarities between users and recommend some places to them...
To the best of my knowledge there is no dataset close to your description on web. Due to anonymity reasons OSN forbid publishing any kind of information that characterizes users. Thus you must focus on datasets containing 1) a social network, and 2) checkin history.
Widely known datasets with these two features are: