A 17th-century British fortress on a volcanic hill, the "Gibraltar of the West Indies", with views to five islands.
Climb Michelangelo's dome for Rome views.
Dramatic valley of mud-brick towns.
One of Europeโs largest castle ruins, sprawled across a travertine hill.
Nineteen immaculate garden terraces cascading down Mount Carmel.
Greek Orthodox monastery clinging to a sheer cliff face in the Pontic Mountains.
Red-sandstone castle ruin above the old town of Heidelberg and the Neckar valley.
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