Yodels that echo across Switzerland’s Bernese Oberland do not come just from Alpine farmers. Gaze skyward, and you’ll spot screaming thrill seekers as they tumble out of airplanes, leap out of gondolas, and swing through narrow, rocky ravines. Adrenaline junkies worldwide venture to the small, unassuming Interlaken, Switzerland not only for calendar-quality shots of the Alps but also for extreme sports. Here, you’ll bungee jump, skydive, canyon swing, hang glide, and hydro-speed. If the action requires a parachute and ends in the suffix -ing, you’re guaranteed to find it here.