4.Vienna, Austria
Vienna is the capital and largest city of Austria and one of the nine states of Austria. Vienna is Austria's primary city and Europe's music capital . Vienna is known as The City of music and The City of Dreams because it was home to the world's first psycho-analyst - Sigmund Freud
Vienna is famous for her historical importance. Here couples get themselves lost in the city for its everlasting beauty which can be enjoyed by watching it from a deck of a riverboat. It is a perfect place for lovers to spend their vacations.