The Mahanavami Dibba, the three-tiered structure within the royal enclosure at Hampi, UNESCO World Heritage Site, Karnataka, India, Asia

Yaxchilan, an ancient Maya city; Usumacinta Province, Chiapas, Mexico

Detail of section of the three tiers of continuous arches of Roman aqueduct, Pont du Gard, UNESCO World Heriyage Site, Languedoc-Roussillon, France, Europe

Roman aqueduct from high vantage point on the western side showing three tiers of continuous arches spanning river, Pont du Gard, Languedoc-Roussillon, UNESCO World Heritage Site, France, Europe