Aruba is a constituent country of the Kingdom of the Netherlands in the southern Caribbean Sea, located about 1,600 kilometres (990 mi) west of the main part of the Lesser Antilles and 29 kilometres (18 mi) north of the coast of Venezuela. It measures 32 kilometres (20 mi) long from its northwestern to its southeastern end and 10 kilometres (6 mi) across at its widest point. Together with Bonaire and Curaçao, Aruba forms a group referred to as the ABC islands. Collectively, Aruba and the other Dutch islands in the Caribbean are often called the Dutch Caribbean.
About three quarters of the Aruban gross national product is earned through tourism or related activities. Most tourists are from the United States (predominantly from the north-east US), the Netherlands and South America, mainly Venezuela and Colombia.
As part of the Kingdom of the Netherlands, citizens of the Netherlands can travel with relative ease to Aruba and other islands of the Dutch Antilles. No visas are needed for Dutch citizens, only a passport, and although the currency used in Aruba is different (the Netherlands uses the Euro), money can be easily exchanged at a local bank for Aruban Florins.
For the facilitation of the passengers whose destination is the United States, the United States Department of Homeland Security (DHS), U.S. Customs and Border Protection (CBP) full pre-clearance facility in Aruba has been in effect since 1 February 2001 with the expansion in the Queen Beatrix Airport. United States and Aruba have had the agreement since 1986. It began as a USDA and Customs post. Since 2008, Aruba has been the only island to have this service for private flights.