The best part of traveling is finding new things to do around the world that you’d never have the opportunity to do sitting back at home. For the average traveler, that usually includes eating new foods, seeing different monuments and maybe checking some kind of exciting experience off of your bucket list: hang-gliding, bungee jumping, whatever.
There are trips and places, though, that are a little too adventurous. Some hikes have been deemed illegal; some sites have been shut down. Nevertheless, if you’re determined enough, you can make it to one of these five places and witness the thrill (or danger) of what the earth has to offer.