 Initial plans for the new cathedral were drawn up and work on the foundation began in 1562 . The decision to have the cathedral face south instead of east was made in 1570 . In the same year , construction commenced , working from the Gothic designs and models created by Claudio de Arciniega and Juan Miguel de Agüero , inspired by cathedrals found in Spanish cities such as Valladolid and Jaén . 
 Initial plans for the new cathedral <a href='uninflect' title='1'><mark>were</mark></a> drawn up and work on the foundation began in 1562 . The decision to have the cathedral face south instead of east was made in 1570 . In the same year , construction commenced , working from the Gothic designs and models created by Claudio de Arciniega and Juan Miguel de Agüero , inspired by cathedrals found in Spanish cities such as Valladolid and Jaén . 
Initial plans for the new cathedral was drawn up and work on da foundation began in 1562 . The decision to have the cathedral face south instead of east was made in 1570 . In the same year , construction commenced , working from the Gothic designs and models created by Claudio de Arciniega and Juan Miguel de Agüero , inspired by cathedrals found in Spanish cities such as Valladolid and Jaén .