Columbia subject headings:
Coast defenses--Spain--Gata, Cape.
Fortification--Spain--Gata, Cape.
Gata, Cape (Spain)--Antiquities.
Parque Natural de Cabo de Gata-Níjar (Spain)--Antiquities.
Watchtowers--Spain--Gata, Cape.
Harvard subject headings:
Coast defenses--Spain--Gata, Cape.
Fortification--Spain--Gata, Cape.
Gata, Cape (Spain)--Antiquities.
Parque Natural de Cabo de Gata-Níjar (Spain).
Princeton subject headings: