Hmmmm, what world would I like to visit?
1. The Hobbit, I'd love to visit the Shire, and Rivendell. The rest of Middle Earth you can keep.
2. Dragon Riders of Pern, tame dragons and fire lizards.
3. Tony Roberts': Kastania Chronicles. One hell of an interesting empire, ruled by a very lusty Imperial family. Don't mess with a Bragalese Witch.
4. H. Beam Piper's The Fuzzie Papers. A wonderful world with a different sapient race.
5. J. A. Sutherland's Into the Dark series. Traveling through space in sailing ships while navigating dark matter.
6. I'd be remiss if I left Star Trek, off the list