Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Tourism forms an important part of Austria''s economy, accounting for almost 9% of the Austrian gross domestic product. As of 2007, the total number of tourist overnight stays is roughly the same for summer and winter season, with peaks in February and July/August.In 2007, Austria ranked 9th worldwide in international tourism receipts, with 18.9 billion US$. In international tourist arrivals, Austria ranked 12th with 20.8 million tourists.