<Tr> <Td_colspan="2"> The Great Wall of China at Jinshanling </Td> </Tr> <Tr> <Td_colspan="2"> Map of all the wall constructions </Td> </Tr> <Tr> <Th_colspan="2"> General information </Th> </Tr> <Tr> <Th> Type </Th> <Td> Fortification </Td> </Tr>

How much time it took to build great wall of china