Stack Rocks, Castlemartin, Pembrokeshire Coast, Wales, United Kingdom, Europe

H'mong houses, Limestone mountains of Dong Van Karst Plateau Geopark, Dong Van,Ha Giang province,northern Vietnam,southeast asia

The Great Sphinx of Giza, a limestone statue of a reclining sphinx, UNESCO World Heritage Site, Giza Plateau, West Bank of the Nile, Cairo, Egypt, North Africa, Africa

Limestone plateau, karstic landscape, Burren region, County Clare, Munster, Republic of Ireland, Europe

Limestone plateau at sunset, karstic landscape, Burren region, County Clare, Munster, Republic of Ireland, Europe

A mountain hut or refuge overlooking the Tre Cime in The Italian Dolomites, Italy, Europe

View across olive trees to medieval town of Pitigliano situated on a volcanic limestone plateau with Campanile on the right, evening light, Maremma, Tuscany, Italy, Europe

The town on its limestone plateau with tower of the cathedral Santi Pietro e Paolo, Pitigliano, Maremma, Tuscany, Italy, Europe

View to medieval town of Pitigliano situated on a volcanic limestone plateau with Campanile on the left, evening light, Maremma, Tuscany, Italy, Europe

Abbey and village of Baume-les-Messieurs, 'Most beautiful village in France', Jura, France

Village of Baume-les-Messieurs, 'Most beautiful village in France', Jura, France