White House Tours
At this time, we are unable to process any White House tour applications for the general public. Although the White House website asks foreign citizens interested in a tour to contact their respective embassy, the US Department of State requires that foreigners be accompanied by a very senior diplomat (Ambassador or Deputy Chief of Mission). Unfortunately, due to the time and resource required, White House tours cannot be made available to the Argentine public.
You may wish to consider tours of the US Capitol Building, where visitors are able to make tour reservations up to three months in advance or obtain same-day tour passes. Passports or other forms of ID are not required for entry into the U.S. Capitol. You can also book a Pentagon Tour. Non-US Nationals will need to submit the Embassy’s address instead of their home address. Further assistance regarding the online booking process should be directed to the Pentagon Tour Office +1 703 697 1776. You can also take a virtual tour of the White House
Other suggested free guided tours
Library of Congress - https://www.loc.gov/visit
The National Mall - https://www.nps.gov/nama/planyourvisit/index.htm
National Cathedral - https://cathedral.org/visit-us/
National Zoo - http://nationalzoo.si.edu
Smithsonian Museums - http://www.si.edu
National Archive Museum - https://www.archives.gov/museum/visit