Clifftop Spanish fort over San Juan.
Castle above a horseshoe harbour.
Mighty medieval castle, UNESCO-listed.
Dutch colonial ramparts around a living town of boutique hotels, lighthouse and cricket on the green.
Coastal drive of cliffs and castles.
Dramatic castle ruin perched on a basalt cliff edge.
Sobering slave-trade fortress, UNESCO-listed.
The oldest European building in sub-Saharan Africa, a haunting slave-trade fort.
Windmills, spa towns and a meteor crater.
Renaissance sea fortress at Helsingor — the Elsinore of Shakespeare’s Hamlet.
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