Stonehenge is located in which country ?

I was in a historical seminar that was all about the biggest archeological sites that are discovered. My interest develop in one place that is known as Stonehenge because it was the oldest historical place according to records. So i wanted to ask in which country Stonehenge is located for my further research.
I was in a historical seminar that was all about the biggest archeological sites that are discovered. My interest develop in one place that is known as Stonehenge because it was the oldest historical place according to records. So i wanted to ask in which country Stonehenge is located for my further research.