Oil Derrick

The Six Flags Over Texas Oil Derrick is a 300-foot (91 m) tall observation tower, and an attraction at the theme park Six Flags Over Texas. It opened in 1969, and Six Flags claims it to be the world's tallest land based oil derrick (although it is actually not functional as such, and never has been). When the tower opened, it had a twelve-lane slide, attached at the first balcony level (50 ft), on which riders could slide down on using burlap bags. With two elevators holding 50 people each, the attraction has a capacity of 2000 riders per hour.