Final answer:
A three-week itinerary for glacier enthusiasts would include visits to Ushuaia, the Antarctic Peninsula, Reykjavik, and Greenland's Ilulissat Icefjord, with an emphasis on eco-tourism and sustainability.
Step-by-step explanation:
To craft an itinerary for travelers who wish to witness the ends of the world and explore glaciers, one could consider a three-week tour to include various modes of transportation and unique destinations. Initiate this arctic adventure by flying into Ushuaia, Argentina, often regarded as the southernmost city in the world, before embarking on a cruise to the Antarctic Peninsula to experience its majestic glaciers and wildlife. Following this, travelers could fly to Reykjavik, Iceland, to explore the famed glaciers there like Vatnajökull via ice hiking or Super Jeep tours. Subsequently, a flight to Ilulissat, Greenland, would provide access to the Ilulissat Icefjord, a UNESCO World Heritage site, through boat tours or helicopter flights for awe-inspiring views of the glacier calving process.
Accommodations would range from eco-friendly lodges to research stations, with meals often dependent on local cuisine. Travelers should consider the environmental impact of their journey, opting for tours that practice eco-tourism principles, striving for sustainability and minimal ecological disruption. The cost of such a trip will vary greatly depending on the level of comfort desired and should include contingencies for remote travel and potential weather delays.