Possible Clues:

• Almost everyone is in one country or another
• Continent SE of Asia
• Canberra's country
• American paintings turning up, amongst others, in faraway country
• A lake in the country somewhere in the southern hemisphere
• Down and under and out and back
• Country street, with distinctive air about it, reversing distress
• Mount Kosciuszko setting
• Kakadu National Park site
• Site of 1890s gold rushes