<Tr> <Th> Coordinates </Th> <Td> 42 ° 19 ′ 44" N 83 ° 02 ′ 23" W ﻿ / ﻿ 42.3289 ° N 83.0397 ° W ﻿ / 42.3289; - 83.0397 </Td> </Tr> <Tr> <Th> Opening </Th> <Td> 1977 </Td> </Tr> <Tr> <Th> Management </Th> <Td> Marriott Hotels & Resorts </Td> </Tr> <Tr> <Th> Height </Th> <Td> 727 ft (222 m) </Td> </Tr>

When was the ren cen built in detroit