theres probably tons of roller coasters called Corkscrew, but the most famous one is at Cedar Point, In Sandusky, Ohio. it was also the first roller coaster ever to include a corkscrew
Raptor - Cedar Point - was created in 1994.
Upper Cedar Point Light was created in 1867.
Jumbo Jet - Cedar Point - was created in 1972.
Lower Cedar Point Light was created in 1867.
Blue Streak - Cedar Point - was created in 1964.
They use it to tear down old coasters, buy materials, advertise, pay for machines/workers, and many other factors. Most are 5mil-20mil to build but it depends on location, materials, and other factors. Examples: Corkscrew in Cedar Point: $1,750,000 Gemini in Cedar Point: $3,400,000 Magnum in Cedar Point: $8,000,000 Mantis in Cedar Point: $12,000,000 Maverick in Cedar Point: $21,000,000 Dragster in Cedar Point: $25,000,000 (I got this information from cedarpoint.com)
White Water Landing - Cedar Point - was created in 1982.
Cedar Point National Wildlife Refuge was created in 1964.
Canobie Corkscrew was created in 1987.
Corkscrew - Valleyfair - was created in 1980.
Corkscrew - Silverwood - was created in 1975.