Vialand is Turkey's best theme park and Located in Istanbul,Turkey.After little refurbish Vialand renamed to "İsfanbul Theme Park".
(My personal idea is Vialand should make something new because they have only one coaster and they haven't done anything new since 2012..)
Here is some attractions:
Nefeskesen: 110 km/h in 3 seconds.
Viking: 49 Feet super-soaking splash experience.