Roughly 1.8 million tourists visited Amman in 2011 and spent over $1.3 billion in the city .
Amman is the 4th most visited Arab city and the ninth highest recipient of international visitor spending .
Roughly 1.8 million tourists visited city in 2011 and spent over $1.3 billion in the city .
Amman is the 4th most visited Arab city and the ninth highest recipient of international visitor spending .