Some
vistors traveling to Austria may require a travel and/or transit
visa. If you need a letter of invitation in order to secure a Austrian
travel visa, please fill out this form and submit it as soon as
possible. Visitors to Austria are invited to visit the following
page to find further information about visa requirements to enter
Austria. http://www.bmeia.gv.at/en/embassy/london/practical-advice/schengen-visa-residence-permits/do-i-need-a-visa.html