Here are my top 5 destinations I hope to visit someday:
Antarctica (some pretty cool cruises available)
Egypt (pyraminds, Valley of the Kings, Mount Sinai - pretty much everything)
New Zealand (so I can cry about LOTR and then kill myself)
Ukraine (Chernobyl would be both creepy and interesting)
Very specific places that would be awesome to visit:
Italy (Colosseum, Pantheon, etc. Or specifically the Ponte Vecchio so I could throw myself off it while singing O Mio Babbino Caro)
England (for a Jane Austen tour)
Hotel de Glace, Quebec (it's made from fucking ICE)
Chateau Madelinot (to watch the BABY HARP SEALS)
Exuma, Bahamas (to go swimming with feral pigs?????)
Norfolk Island (found this one day while admiring their flag, then realized it looks badass and has a bay named Emily Bay)
Morocco (because I always liked it at EPCOT and then looked it up and it still seems dope)
Sossusvlei Dunes, Namibia (because it reminds me of that Windows XP desktop which gives me saudade)
Hotel Kakslauttanen in Saariselkä, Finland (because they have igloos in which to watch the northern lights)