Discovery Education has a website that offers multiple Virtual Field Trips for kids to go beyond the walls of the classroom and learn. The website allows students to wander around different venues around the world, along with interviews and important educational information that will enhance the topic they are learning about.
I would recommend these Virtual Field Trips to any Middle School Teacher. They are very well done and grab the eyes of a middle school student. They are however geared towards the younger crowd so it may be a stretch when sharing with High School students.