<P> In the 19th and early 20th centuries, some writers wrote their own lists with names such as Wonders of the Middle Ages, Seven Wonders of the Middle Ages, Seven Wonders of the Medieval Mind, and Architectural Wonders of the Middle Ages . However, it is unlikely that these lists originated in the Middle Ages, because the word "medieval" was not invented until the Enlightenment - era, and the concept of a Middle Age did not become popular until the 16th century . Brewer's Dictionary of Phrase and Fable refers to them as "later list (s)", suggesting the lists were created after the Middle Ages . </P> <P> Many of the structures on these lists were built much earlier than the Medieval Ages but were well known . </P> <P> Typically representative are: </P> <Ul> <Li> Catacombs of Kom el Shoqafa </Li> <Li> Colosseum </Li> <Li> Great Wall of China </Li> <Li> Hagia Sophia </Li> <Li> Leaning Tower of Pisa </Li> <Li> Porcelain Tower of Nanjing </Li> <Li> Stonehenge </Li> </Ul>

8 wonders of the world great wall of china