A drone shot of the Spanish quarter and old city gate

st augustine florida spanish quarter castillo de san marcos national monument drone footage aerial view historic district old city architecture landmark coastal city fortified structure colonial history european influence tourist destination scenic beauty waterfront view historical site spanish colonial era cultural heritage fort walls riverfront ancient city drone perspective spanish architecture tourist attraction river views coastal scenery historic preservation urban landscape heritage site archaeological site coastal town drone shots stone walls maritime history tourist hotspot cultural landmark scenic overlook coastal fort drone angles fortifications historic charm riverfront fort spanish influence architectural marvel