When was formula rossa built?

Which explorer discovered the Grand Canyon? In the state of Georgia What lake does the chattahoochee river and Oconee river flow into? What term describes the area around the mouth of a river where fresh water and salty water mix? What is the state of machu picchu? What year was the Birlin wall built? Do salish lived by the pacific coast? What is the postcode of Buckingham Palace? What is being done to preserve the Florida Everglades? Does human blood have the same composition as sea water? What is the body of water between Lake Superior and Lake Erie named after an Indian tribe? Is okinawa below sea level? What is the windiest planet in our soler system? How deep are the crab pots laid in the bering sea? What type of rocks does the Ozark mountains have? What is the opening called through which arrows were shot in a castle? Which is the largest US lake west of the Mississippi River Lake Mead or Great salt Lake? What kind of paint used on the skin of the statue of liberty? What is an interesting fact about the tropical rain forest? Where is Lake Ronkonkoma located? When was Museum of the Rockies created?