Snuggle into a glass igloo at Hotel Kakslauttanen. The fully appointed geometric domes let the view in (the sky is completely flecked with stars at night) but keep the cold out. Hitch up a dogsled during the day (kakslauttanen.fi).
Cruise around Halong Bay in a vintage-style wooden boat on the milky turquoise sea. Take in limestone karst islands and floating fishing villages. Excursions include kayaking and hiking for 360-degree panoramas (indochinasails.com
Head south for the Caribbean waters near Utila Island to swim with sharks (without a cage). You'll be hit with a rush of adrenaline, but never fear: whale sharks -- the world's largest fish -- are gentle giants (utiladivecenter.com).
Soar by hot-air balloon over otherworldly rock formations, called fairy chimneys, in Cappadocia. Some of these bizarre stones are even carved out and inhabited. Stay in a cave hotel for the full experience (kapadokyaballoons.com
Feel the fury of an intense Pacific thunderstorm from the cozy confines of the Wickaninnish Inn on Vancouver Island. "Storm watching" is considered a season here -- it's from November to February (wickinn.com).