A brief version of the itinerary is as follows:
4/12 NYC – Ushuaia (plane – arrive in 4/13 PM)
| see the world’s southernmost city
| see end of the world lighthouse
| walk with pigeons
| cruise Beagle Channel
| visit Tierra del Fuego national park
4/16 Ushuaia – Bariloche (plane)
Bariloche/Esquel/Lake District (bus/train)
| see mountain and lake in Patagonia
| paragliding
| take the old Patagonian Express
| ride along the Seven Lakes Route
4/20 Bariloche – Buenos Aires (overnight bus)
| see Buenos Aires city
4/22 Buenos Aires – Colonia in Uruguay (ferry)
| day trip to see colonial town Colonia
| continue to see Buenos Aires city
4/25 Buenos Aires – Iguazu (plane)
| see Iguazu Falls
4/26 Buenos Aires – NYC (late night plane)
4/27 NYC - Boston