After sifting through hundreds of candidates including Epcot Center, the land-locked Sea World in Ohio and my neighbor's freakishly clean garage, organizers have narrowed the field down to 21 finalists including these heavy hitters:
Machu Pichu

Hands-down, Machu Pichu is the most fun name to say. I give this one big points.
Ma-chu Pi-chu. Ma-chu Pi-chu. Say it loud. Say it proud!
Easter Island Statues

Awin for these guys surely would please our future "Chariot of the Gods"-riding alien masters when they return to Earth.
Petra

This one is a clear winner because it was in "Indiana Jones and the Last Crusade," the best of the three Indiana Jones movies. "The dooog was named Indiana...." Ha, I love that wife-beating Scotsman....and I think international voters will, too.
The odds don't look so good for these candidates:
Hagia Sophia -- Sounds like a chubby Slavic girl.
Neuschwanstein Castle -- Too many consonents.
Sydney Opera House -- Nothing featured in "Finding Nemo" should be ranked as a wonder of the world. Maaaaybe Ellen. Maybe.