I was thinking in Europe the night VFR was not allowed . There is any change ?
Indeed. Under EASA night VFR is now allowed, as it pretty much was in the UK beforehand with a night qualification. CAP 804 FCL.810 refers
http://www.caa.co.uk/docs/33/CAP804rfs.pdf
I wouldn't say it's that difficult, obviously you have to pick your night a little more carefully with consideration for cloud, but on a clear night it's just as easy as day flying and you're certainly not looking at the attitude indicator all the time, you're looking out the window. Navigation can be far easier as every town will stand out from miles away, and each town's shape stands out so way it's very simple. However, if you're in a vastly unpopulated area you can very quickly find yourself with no useful point of reference for navigation, so again this just takes a little more planning than day VFR.