Eregion is a fictional realm in J.R.R. Tolkien's Middle-earth, known for its beautiful landscapes and rich history. It was located west of the Misty Mountains and east of the Hollin Ridge. Eregion was primarily inhabited by the Noldor, a group of Elves who were skilled in craftsmanship and magic. The region is most famous for being the home of Celebrimbor, a master smith who forged the Rings of Power during the Second Age. Eregion eventually fell to the forces of Sauron, leading to its decline and the scattering of its inhabitants.