This Alpine Coaster, called Youhooo, was built on the top of a mountain between the beaches of Balneario Camboriu and Laranjeiras, in Santa Catarina - Brazil. It isn't properly a roller coaster, but the view is fantastic, isn't it?
http://www.euamosantacatarina.com.br/wp-content/gallery/unipraias/youhooo-unipraias-balneario-camboriu-03.jpg
Here you can see a 360ยบ image: http://www.unipraias.com.br/tour/1/