Where haven’t you gone? What’s on your bucket list?

For Alex Honnold, one of the most accomplished rock climbers on earth, the holy grail is Taipan’s Wall in Victoria, Australia. “It’s the coolest, best sandstone ever with really cool amazing unique holds,” he tells National Geographic. “It’s supposed to be paradise.” Whitewater kayaker Ben Stookesberry wants to navigate the bubbling, freezing Yarlung Tsangpo in Tibet, a mighty river in the Himalayan watershed that has never been completely kayaked. Climber Steph Davis wants to BASE jump from Shipton Spire, a giant pyramid of shale that shoots into the sky in remote Pakistan. People have climbed up, but nobody has ever jumped down.

These are just three of 20 extreme bucket list destinations (“Dream Trips”) earmarked by some of the best-traveled adventurers on earth and published at National Geographic. These are the wonders of the world that even the most world-weary still haven’t seen.

Paddle boarding Peru, hiking the full length of the Continental Divide and SCUBA diving under the Antarctic ice shelf are just a handful of the other adventures featured on the list. Don’t forget to check out the Must-Do Trips listed by the athletes as well. Although the adventures aren’t new to them, there’s a good chance they’re new to you.