Cairo, Egypt, in its history[?] has had a significant number of fortified gates protecting both inner and outer city. Apart from the purpose of defense they were also used for differentiation of the varied social and economic classes. Often the gates were heavily decorated as artistic pieces.
... North America
Thor Heyerdahl, (1914-2002), Norwegian explorer
Henry Hudson, (died 1570), discovered the Hudson River and sailed up it to Albany, discovered Hudson ...