(0/week includes room, board, and instruction; mariposaspanishschool.com) There is no surer way to get that once-in-a-lifetime Indiana Jones feeling than by swimming-wading-squeezing-crawling-hiking a half mile deep into the Aktun Tunichil Muknal in Belize.

Whether you canoe the north woods in Maine, sea kayak in Baja, or dogsled in Alaska, you’ll return home a rejuvenated, stronger man.A course includes 20 hours of personalized language instruction per week, room and board (either at the school or with a local family) and trips to local volcanoes, markets, and attractions.The school has a special 2-week study tour coming up in July.(Basically, you get to preserve nature and do cool extreme sports at the same time.) And if 5 days sounds too short, sign up for a 3-day service project extension, which will take you into rural schools or back out on the trails.(0; adventure-life.com) Every bucket list should include a high peak, so how about Huayna Potosi, which stands at 20,000 feet—a mile higher than anything in the continental United States?