Budapest to Vienna
In Richard Linklater's 1995 talk-fest Before Sunrise, Jesse (Ethan Hawke) and Celine (Julie Delpy) meet on a train from Budapest to Vienna and embark on a daylong love affair. They squeeze a lot of romance into just a few hours, and you can too.
The most romantic train ride between the two cities is aboard the Orient Express; unfortunately it doesn't allow much stop-over time in Vienna (where Jesse and Celine spent an alluring day) before continuing on to Paris. But there are several other trains that make the same three-and-a half-hour trip, and they're all romantic. The gentle rocking of the car, the landscape speeding by it's hard to resist.
Once you're in Vienna, stroll over the Zollamtssteg bridge and through Franziskanerplatz, one of the most beautiful squares in the city, and wind up in the tiny Friedhof der Namenlosen ("Cemetery of the Nameless"), just like they did in the movie. The great part about your journey is that it doesn't have to end by morning you can sleep (or, something) the day away in a sexy circular bed overlooking the Danube at the Arcotel Kaiserwasser.
Arcotel Kaiserwasser: Wagramer Strasse 8;+43-(0)1-224-24-0