If you find yourself with a few more days to spare and you’re willing to travel 55 miles, check out Vilnius. This popular place has plenty to keep you busy. Lithuanian National Opera and Ballet Theatre, Gediminas Tower and Three Crosses alone make the drive out worthwhile. Locals will also likely point you in the direction of Trakai, 60 miles away. If you only see one thing here, make sure it’s Trakai Island Castle. (But we’re also big fans of Trakai Peninsula Castle and Trakai Historical National Park.)