What do you do for ultimate bragging rights when you've already visited the Grand Canyon, the Great Barrier Reef, the Serengeti and the Giza Pyramids?
원문출처 : https://www.cnn.com/travel/article/world-view-space-balloon-trips-50000-dollars/index.html
원문출처 : https://www.cnn.com/travel/article/world-view-space-balloon-trips-50000-dollars/index.html