In light of the July 15 coup attempt and the resulting potential for interruptions to travel and daily life, The U.S Department of State suggest U.S. citizens reconsider travel to Turkey at this time. Please confirm your travel plans with your airlines regarding any suspended travel to Turkey.
Beginning April 10, 2014, the Turkish Ministry of Foreign Affairs will no longer provide visas on arrival to foreign travelers. All foreigners must obtain their Turkish visas electronically prior to departure from their country of residence.You need to have a travel document valid for at least 6 months from the date you intend to enter Turkey.
Turkey tourist visa is not required for citizens of Brazil for a stay up to 90 days.