England, Cumbria, Keswick, Slate wall of building.

Italy, Sardinia, Arzachema, Nuraghe La Prisgiona Archaeological Site.

Italy, Puglia, Bari, Conical dry stone rooves of trulli houses, Rione Monti, Alberobello.

Italy, Puglia, Bari, Panoramic view of trulli houses, Alberobello.

Men reparing drystone wall Wasdale Head Lake District