Andy Sands / Common treecreeper {Certhia familiaris} searching for insects in crack in a tree, West Sussex, England

Pete Oxford / Machu Picchu ruins Andes, Peru. South America

Ingo Arndt / Ancient Native American ruins, White House ruins, first inhabited around 1200 CE by the Anasazi (Ancient Pueblos) culture, Canyon de Chelly National Monument, Arizona, USA, October

Ingo Arndt / Ancient Native American ruins, White House ruins, first inhabited around 1200 CE by the Anasazi (Ancient Pueblos) culture, Canyon de Chelly National Monument, Arizona, USA, October

Pete Oxford / Desecrated ancient tomb with skeleton inside, San Juan, Altiplano, Bolivia

Tim Edwards / Pounabrone dolmen - stone-age tomb, Burren NP, County Clare, Republic of Ireland

Pete Oxford / Machu Picchu Inca ruins Near Cuzco, Andes, Peru South America