I took the 2:30pm tour, and they tell you about the history of the city and some of it Buildings. They also give you a lot of tips of where to go and what to do. And they do it all for free, they are not receiving any financial help from authorities, they live on any thing that you are willing to tip them for the tour. Go with them, it takes like 3 hours and you get a better understanding of the city!
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