Friday, June 16, 2017
Built at the order or Isabella and Ferdinand of Spain and costing about 20% of their wealth, it is high tech for the 15th century. It took by 500 worker six and a half years. Contrast that with Boston's Big Dig to put an elevated bridge underground sixteen years with modern equipment and many more workers.
How was it high tech? Partially because architect Lopez worked with Arab experts to make the walls thicker and deeper than any other fortress of its time. Ventilation allowed for shooting of fire arrows without killing the archers. The ability to fire cannonballs thru out meant that the fort was protected on all sides.
Remind me not to wait 30 years to see other things that trip my interest.
Posted by DL NELSON at 6:57 AM