Smithsonian Journeys tours always have unique interesting itineraries and always have a very interesting like-minded set of other traveling companions. The lecture information always help better understand the countries and geology better. 

This was the very best trip I have ever taken. I will travel with Smithsonian Journeys again and again! Thank you so much. 

This was the only tour we found that went to every place we wanted to visit in Australia and New Zealand (including the outback!).