<Table> <Tr> <Th_colspan="2"> Fort Santiago </Th> </Tr> <Tr> <Td_colspan="2"> The Santiago </Td> </Tr> <Tr> <Td_colspan="2"> The reconstructed main gate of Fort Santiago </Td> </Tr> <Tr> <Td_colspan="2"> Location within Metro Manila </Td> </Tr> <Tr> <Th_colspan="2"> General information </Th> </Tr> <Tr> <Th> Type </Th> <Td> Bastioned fort </Td> </Tr> <Tr> <Th> Architectural style </Th> <Td> Italian - Spanish school of fortification </Td> </Tr> <Tr> <Th> Location </Th> <Td> along Pasig River </Td> </Tr> <Tr> <Th> Town or city </Th> <Td> Manila </Td> </Tr> <Tr> <Th> Country </Th> <Td> Philippines </Td> </Tr> <Tr> <Th> Coordinates </Th> <Td> 14 ° 35 ′ 42" N 120 ° 58 ′ 10" E ﻿ / ﻿ 14.59500 ° N 120.96944 ° E ﻿ / 14.59500; 120.96944 Coordinates: 14 ° 35 ′ 42" N 120 ° 58 ′ 10" E ﻿ / ﻿ 14.59500 ° N 120.96944 ° E ﻿ / 14.59500; 120.96944 </Td> </Tr> <Tr> <Th> Construction started </Th> <Td> 1590 </Td> </Tr> <Tr> <Th> Completed </Th> <Td> 1593 </Td> </Tr> <Tr> <Th> Renovated </Th> <Td> 1733 </Td> </Tr> <Tr> <Th_colspan="2"> </Th> </Tr> <Tr> <Th> Other dimensions </Th> <Td> 2,030 feet (620 m) perimeter </Td> </Tr> <Tr> <Th_colspan="2"> Technical details </Th> </Tr> <Tr> <Th> Structural system </Th> <Td> Masonry </Td> </Tr> <Tr> <Th_colspan="2"> Design and construction </Th> </Tr> <Tr> <Th> Architect </Th> <Td> Gómez Pérez Dasmariñas (1590) Fernándo Valdés y Tamon (1730s) </Td> </Tr> <Tr> <Th> Structural engineer </Th> <Td> Leonardo Iturriano </Td> </Tr> <Tr> <Th> Designations </Th> <Td> National Historical Landmark </Td> </Tr> </Table> <Tr> <Th_colspan="2"> Fort Santiago </Th> </Tr>

Who served as the architects and structural engineer of fort santiago
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