Nefeskesen (Turkish for Breath Taker) is a steel launched roller coaster located at Vialand in Istanbul, Istanbul, Turkey. This Swiss-made coaster hurtles on its track at 68 mph (110 kph). More impressive is that it reaches that speed in three seconds flat. It joins King Kong Village and 50 others attractions at Istanbul’s new theme park, Vialand, which opened April 23 2013.