Wine lovers have Napa Valley. Fashionistas have Paris. And Elvis diehards have Graceland. Devotees visit them to sample the finest, see the latest in the industry, and soak in the history of the greats. But where should geeks book their tickets to when it's time to get out of the cube and pursue their own niche interests abroad? We found out where. Whether you want to stock your gadget pile, express your fandom with a visit to your favorite company headquarters, or experience some of the most important scientific and technological sites in the world firsthand, we've sifted through the options, talked to the experts, and selected 10 of the coolest science and tech destinations in the world. So open a new browser tab with Orbitz, request some vacation days, and check out some of the best spots to geek out across the world.