On of my favorite cities. Yes, the Zentralfriedhof is worth the effort. So much history, and the park is stunning. Remember the closing scene of The Third Man?

Frankly, a viewing of The Third Man prior or during your visit to Vienna provides an amazing view of partitioned Vienna after WWII. Robert Krasker's cinematography is inspiring and magnificent.

http://en.wikipedia.org/wiki/Zentralfriedhof

http://www.imdb.com/title/tt0041959/