I always say that the best way to enjoy a town is just going around with no particular goal... in fact here we found this very nice view of the new town, with some older buildings in the front, the high towers of the Church of St. Philip and St. James and the new high skyscrapers on the other bank of the river Neris in the back.
Old and new all together, in a wonderful evening of August, in Vilnius of course! ;-)
Panorama of Old Town of Vilnius is best seen from the Gediminas Castle. So, don't be too lazy to get up to the hill and go to the Castle Museum, from where you can get up to the panorama place upstairs.