I have always been fascinated by aerial tramways around the world. The telefrico in Merida, Venezuela rises about 10,000 feet and stops at four different levels where you can get out and hike, or you can hike right from the bottom. Just click on to the country.
http://en.wikipedia.org/wiki/List_of_aerial_tramways
http://www.answers.com/topic/list-of-aerial-tramways