According to Comic Book Movie via Lucjan Kaliniecki’s Twitter, Thor: The Dark World will be filming some sequences at Stonehenge. Stonehenge has a history of having mystical significance in the Marvel universe, being used as a portal and such. We don’t know if Stonehenge will be used as a scene on Earth, or one of the Nine realms Thor may explore. I’d guess they would make Stonehenge be Stonehenge, because why else film there, and why film there if they want to obscure where it is since it is so iconic?
Also, in an interview with Examiner, Idris Elba explained that his role of Heimdall, the sentry of Asgard, will be expanded in the sequel. Elba: ”In the new film we’re going to get to know Heimdall the Asgardian a bit better, and we’re going to get to know Asgard a bit better…I can’t say too much, »
Stonehenge Guided Tours