Ararat has traditionally been the main focus of the searches for Noah's Ark. Augustin Calmet wrote in his 1722 biblical dictionary, It is affirmed, but without proof, that there are still remains of Noah's ark on the top of this mountain; but M. de Tournefort, who visited this spot, has assured us there was nothing like it; that the top of mount Ararat is inaccessible, both by reason of its great height, and of the snow which perpetually covers it. Archaeological expeditions, sometimes supported by evangelical and millenarian churches, have been conducted since the 19th century in search of the ark. According to a 1974 book around 200 people from more than 20 countries claimed to have seen the Ark on Ararat since 1856. A fragment from the ark supposedly found on Ararat is on display at the museum of Etchmiadzin Cathedral, the center of the Armenian Church. Despite numerous reports of ark sightings (e.g. Ararat anomaly) and rumors, no scientific evidence of the ark has emerged.