(Icelandic: , Thing Fields), anglicised as Thingvellir (or, mistakenly, Pingvellir), is a place in the administrative district of Bláskógabyggð in southwestern Iceland, near the Reykjanes peninsula and the Hengill volcanic area. Þingvellir is a site of historical, cultural, and geological importance and is one of the most popular tourist destinations in Iceland. It lies in a rift valley that marks the crest of the Mid-Atlantic Ridge. It is at the northern end of Þingvallavatn, the largest natural lake in Iceland.