<Table> <Tr> <Th colspan="2"> Qutub Minar कुतुब मिनार قطب مینار ‬ </Th> </Tr> <Tr> <Td colspan="2"> Qutb Minar in Delhi , India </Td> </Tr> <Tr> <Th> Height </Th> <Td> 73 metres ( 240 ft ) </Td> </Tr> <Tr> <Td colspan="2"> </Td> </Tr> <Tr> <Th colspan="2"> UNESCO World Heritage Site </Th> </Tr> <Tr> <Th> Type </Th> <Td> Cultural </Td> </Tr> <Tr> <Th> Criteria </Th> <Td> </Td> </Tr> <Tr> <Th> Designated </Th> <Td> 1993 ( 17th session ) </Td> </Tr> <Tr> <Th> Reference no . </Th> <Td> 233 </Td> </Tr> <Tr> <Th> Country </Th> <Td> India </Td> </Tr> <Tr> <Th> Continent </Th> <Td> Asia </Td> </Tr> <Tr> <Th> Constructed by </Th> <Td> Started construction by Qutub - ud - din Aibak & completed construction by Iltutmish </Td> </Tr> <Tr> <Td colspan="2"> </Td> </Tr> </Table>
who caused to build qutub minar in delhi
Qutub - ud - din Aibak