The site of Metsamor Castle, near the Armenian town of Metsamor has been populated from the 5th millennium BC until the 18th century AD. The excavations of the tombs of Metsamor castle began in 1965. Arkuni town is noted for its observatory and temple complexes consisted of seven sanctuaries. Near the site is a neolithic stone circles dated to ca. 5000 BC, interpreted by enthusiasts of archaeoastronomy as an astronomical "observatory".
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The Museum of History and Archeology at Metsamor was opened in 1968. It is the repository of more than 22,000 items, almost all uncovered at the site.