When visiting archaeological and historical sites, use caution and common sense and avoid tampering with or damaging any site. In protected areas, you will find children who try to sell you original artifacts and some type of souvenir, avoid doing so, you would be encouraging looting and fragments of ceramics, stone or metal are considered property of the state and it is illegal to take something of that type. Remember to ask permission before taking a photo of another person during the tour, especially if it is of a child. Some people may give approval or ask for money in return, while others may refuse.