Sustainability is still catching on in Buenos Aires; for a long time, the most widespread attempts at responsible tourism in the city were hotels' requests that visitors reuse towels and sheets. Since 2009, however, Buenos Aires has begun developing a network of bicycle paths, including many in tourist areas, particularly in the Ecological Reserve. Biking is a convenient, enjoyable way of seeing the city without drastically increasing your carbon footprint.

The company Travel Native (tel. 11/15-4419-3467; www.travelnative.com) offers tours as well as a Web portal of information on Argentine hotels and companies that use environmentally conscious methods of operation. It's run by French expat Olivier Dufeu, who recommends for instance that travelers to Argentina dedicate more time to their trip and not fly vast distances across the country using jets, using other means of transit or staying in one place. Also visit www.reddeturismoresponsable.org for lists of responsible operators and companies throughout Argentina, or see www.frommers.com/planning for more tips on responsible travel.

Note: This information was accurate when it was published, but can change without notice. Please be sure to confirm all rates and details directly with the companies in question before planning your trip.