25. The Highest Andes
American-born mountaineer Edward Fitzgerald met his new best friend, Swiss guide Matthias Zurbriggen while on a hiking trip. Together they set their goal to be the first ones to go with a team to survey and study the high plateau regions of the southern Andes. Not only were they successful, but Fitzgerald ended up writing a book about it named The Highest Andes in 1899. Afterward, they climbed Mount Aconcagua, the tallest mountain in the Americas, spending six weeks surveying the area and later going all the way to the top, becoming the first one to do so successfully.
