The citadel of Civita di Bagnoregio is located on the top of a remarkable hill and offers an incomparable spectacle to those who observe it from the panoramic points of Bagnoregio.

The writer Bonaventura Tecchi had called it the "dying city" and this is partly true. Civita di Bagnoregio rises in fact on a very precarious ground, situated on a tuffaceous plateau, it risks collapse because the vast clay banks that support it are subject to continuous erosion. Proof of this are the majestic "badlands", partly covered by poor vegetation, which extend for kilometers and which at sunset give the entire landscape a lunar aspect. The wonderful village of Civita di Bagnoregio, the so-called Civita that dies, is a very small center where time seems to have stopped and where it can only be reached on foot, crossing a reinforced concrete bridge built for the benefit of the few remaining citizens and tourists who visit from all over the world. The famous Civita di Bagnoregio rises on volcanic products and appears almost like an island of red tuff in the sea of white clays of the badlands. From the analysis of the ancient Archives, the various historical moments in which very destructive collapse events occurred, which resulted in the progressive reduction of the height on which Civita di Bagnoregio stands, from 1450 to the destructive earthquake of 1738, have been reconstructed. medieval village, known all over the world as "the dying city" due to the progressive collapse of the perimeter walls and the consequent abandonment by the population over the last few centuries, it offers a truly surreal and unforgettable atmosphere. From the eastern cliff of Civita di Bagnoregio you can admire the stupendous spectacle of the "Ponticelli", huge natural clay walls, the last trace of an erosive process that began thousands of years ago and has not yet stopped. This is the last solution adopted to access the characteristic village, from 1854 to today the point where the road passes has progressively lowered by about 25 meters. A study conducted on the speed of retreat of the edges of the gullies found an average erosion of about 7 centimeters / year.