We're going to build an artificial man
Steel Curtain - Coasterpedia - The Roller Coaster and Flat Ride Wiki
Phantom's Revenge - Wikipedia
After a 20 year hiatus, I once again present to you the tallest operating roller coaster on Earth! [Superman: Escape From Krypton] : r/rollercoasters
Record-Breaking 9-Flip Roller Coaster in Pittsburgh
Epic Roller Coaster In West Mifflin, Pennsylvania
Kennywood's Steel Curtain to open July 13 - Pittsburgh Business Times
STEEL CURTAIN: Watch a video simulation of the new Pittsburgh Steelers-themed roller coaster coming to Kennywood Park
Kennywood, Roller Coaster Wiki
Steel Curtain (roller coaster) - Wikipedia
Steel Curtain (roller coaster) - Wikipedia
File:Kennywood - 48555581076.jpg - Wikimedia Commons