The flight in an Airbus A320, arranged by low-cost carrier Wizz Air and the Hungarian government, was part of a Labor Day airshow celebration on May 1.
Listening to the automated callouts that can be heard in the cockpit, the airplane descends below 200 feet at one point — and much closer than that to the bridges below. In the video the airliner can be seen skimming below the peak of a cliff as it buzzes buildings including the nation's parliament, undoubtedly to the surprise of many residents.
http://www.youtube.com/watch?v=3zj4GA1zkqg
I did that a view times above the River Rhein myself (But without turbines,I have fart to get this kind of boost 
)