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Castillo de San Marcos

 

It is an amazing stone fortress in a star shape that guarded the eastern coast of florida and the city of St. Augustine. It was in a very important location to guard trade along the coast and with Europe.

It is in absolutely pristine condition and managed by the National Park Service. It is open to the public and it is a great window into the past.

This is part of my journey around Medieval America


 

Sign of Castillo De San Marcos

This is a model of the castillo. It shows the star shape of the fortress.

Model of the fortress

 

Outside the fortress

 

The inner courtyard

 

 

The big thing about this fortress was cannons both in firing them and in defense against them. And it is quite unique among all the fortresses in the world in that it is cannon ball proof! Yes, cannonball proof. This is because of the unusual material it is made from: Coquina.

Coquina stone

Coquina is a stone locally sourced in Florida and it is sedimentary rock formed from the shells of mollusks.

closeup of coquina

And it is quite remarkable as the walls of a fortress because it is immune to cannonball fire. This complex conglomeration of shells simply crunches under cannon fire. It compresses and absorbs the impact. So, the walls don't crumble they just absorb the blow. It's quite amazing.

And it has proven to be true. In 1740 the British bombarded the fortress for 27 days with cannons and the fortress held strong.

A cannon on the wall

 

They have preserved the whole castle in its original state as a fortress on the water in the 17th and 18th centuries so you can get an amazing glimpse as to how it was.

The bunks and housing

 

Watch this short clip showing the fortress.



 

The History of Castillo de San Marcos