A good hike from downtown leads up to Glaciar Martial, where you can enjoy views of Ushuaia and the Beagle Channel; in fact, the views are possibly more impressive than the actual glacier. Catch a taxi up the hill or, if you're up for an all-day hike, follow San Martín west and keep ascending as it zigzags (there are many hiker shortcuts) to the ski run. At this point, either take the Aerosilla chairlift or walk another two hours into town.
