Title: Visa requirements for United States citizens
Content:  Visa requirements for United States citizens for visits to various territories, disputed areas, partially recognized countries not mentioned in the list above, recognized administrative subdivisions that operate on different visa policies and restricted zones:
Title: Visa requirements for Brazilian citizens
Content:  Johnston Atoll, Kingman Reef, Midway Atoll, Palmyra Atoll and Wake Island. ; 🇻🇪 Venezuela. Margarita Island - Visa not required. All visitors are fingerprinted. ; Vietnam. Phú Quốc - Visa not required for 30 days. ; 🇾🇪 Yemen outside Sana’a or Aden - Special permission needed for travel outside Sana’a or Aden. ; 🇺🇳 UN Buffer Zone in Cyprus - Access Permit is required for travelling inside the zone, except Civil Use Areas. ; 🇺🇳 Korean Demilitarized Zone - Restricted area. ; 🇺🇳 UNDOF Zone and Ghajar - Restricted area.  Visas for Cambodia, Myanmar, Rwanda, São Tomé and Príncipe, Senegal, Sri Lanka and Turkey are obtainable online.
Title: Visa requirements for Mexican citizens
Content:  United States. United States Minor Outlying Islands – Special permits required for Baker Island, Howland Island, Jarvis Island, Johnston Atoll, Kingman Reef, Midway Atoll, Palmyra Atoll and Wake Island. ; 🇻🇪 Venezuela. Margarita Island – Visa not required. All visitors are fingerprinted. ; Vietnam. Phú Quốc – Visa not required for 30 days. ; 🇾🇪 Yemen outside Sana'a or Aden – Special permission needed for travel outside Sana'a or Aden. ; 🇺🇳 UN Buffer Zone in Cyprus – Access Permit is required for travelling inside the zone, except Civil Use Areas. ; 🇺🇳 Korean Demilitarized Zone – Restricted area. ; 🇺🇳 UNDOF Zone and Ghajar – Restricted area.   
Title: Visa requirements for European Union citizens
Content:  following countries (meaning the citizens of those countries may travel to all EU member states visa-free) — Antigua and Barbuda, Argentina, Australia, Bahamas, Barbados, Brazil, Brunei, Canada, Chile, Costa Rica, Dominica, El Salvador, Grenada, Guatemala, Honduras, Kiribati, Malaysia, Mexico, New Zealand, Nicaragua, Panama, Paraguay, Saint Kitts and Nevis, Saint Lucia, Saint Vincent and the Grenadines, Samoa, Singapore, Solomon Islands, South Korea, Tonga, Trinidad and Tobago, Tuvalu, Uruguay, Vanuatu. Following countries are not implementing visa reciprocity fully:  According to a report from April 2015, the Commission dismissed notifications by both Bulgaria and Romania of a general visa requirement by Australia. It concluded that the Australian electronic visa 'manual processing' treatment 
Title: Visa requirements for Turkish citizens
Content:  to visit with a multiple entry EU Member State, Canada or USA visa. ; 🇬🇱 Greenland — Visa required. ; 🇻🇪 Margarita Island — All visitors are fingerprinted. ; 🇵🇷 Puerto Rico — Visa required - Possible to visit with a multiple entry US visa ; Saint Barthelemy — Visa required. Possible to visit with a multiple entry Schengen visa or an EU residence permit. ; Saint Martin — Visa required - Possible to visit with a multiple entry Schengen visa or an EU residence permit. ; 🇵🇲 Saint Pierre and Miquelon — Visa required. Possible to visit with a multiple entry Schengen visa or 
Title: Visa requirements for Indian citizens
Content:  ; 🇺🇸 United States. United States Minor Outlying Islands – Special permits required for Baker Island, Howland Island, Jarvis Island, Johnston Atoll, Kingman Reef, Midway Atoll, Palmyra Atoll and Wake Island. ; 🇻🇪 Venezuela. Margarita Island – Visa not required. All visitors are fingerprinted. ; Vietnam. Phú Quốc – Visa not required for 30 days. ; 🇾🇪 Yemen outside Sana'a or Aden – Special permission needed for travel outside Sana'a or Aden. ; 🇺🇳 UN Buffer Zone in Cyprus – Access Permit is required for travelling inside the zone, except Civil Use Areas. ; 🇺🇳 Korean Demilitarized Zone – Restricted area. ; 🇺🇳 UNDOF Zone and Ghajar – Restricted area.   
Title: Visa requirements for United States citizens
Content:  General visa requirements of sovereign countries towards United States citizens:
Title: Visa policy of Brazil
Content:   Holders of diplomatic, official or service passports of countries exempt from visit visas (listed above) also do not need a visa, except those of Andorra, Liechtenstein, Monaco and New Zealand, while those of Australia, Canada and the United States do not need a visa if traveling for tourism. In addition, holders of diplomatic, official or service passports of Algeria, Angola, Azerbaijan, Benin, Botswana, Burkina Faso, Burundi, Cambodia, Cameroon, Cape Verde, China, Congo, Egypt, Equatorial Guinea, Ethiopia, Gabon, Ghana, Guinea-Bissau, Haiti, India, Ivory Coast, Jordan, Kenya, Kyrgyzstan, Laos, Lebanon, Malawi, Mali, Mauritania, Moldova, Mozambique, Myanmar, Nepal, Nigeria, Oman, Saint Lucia, São Tomé and Príncipe, Senegal, Sri Lanka, Sudan, Tanzania, Togo, Vietnam and Zambia and of diplomatic passports of Cuba, Iran, Pakistan and Uzbekistan do not need a visa.
Title: Visa requirements for Turkish citizens
Content:  required (10 US Dollars). ; 🇺🇳 Korean Demilitarized Zone — restricted zone. ; 🇺🇳 UNDOF Zone and Ghajar — restricted zones. ; Phú Quốc — can visit without a visa for up to 30 days. ; 🇾🇪 Yemen — Special permission needed for travel outside Sana’a or Aden. Caribbean and North Atlantic 🇦🇮 Anguilla — Visa required - Possible to visit with a multiple entry Canada, USA or United Kingdom visa. ; 🇦🇼 Aruba — Visa required - Possible to visit with a multiple entry Schengen visa or an EU residence permit. ; 🇳🇱 Bonaire, St. Eustatius and Saba — Visa required - Possible to 
Title: Visa requirements for Russian citizens
Content: 🇧🇬 Bulgaria, 🇭🇷 Croatia, 🇨🇾 Cyprus, 🇷🇴 Romania, 🇦🇱 Albania, 🇦🇩 Andorra, 🇬🇮 Gibraltar – Visa exempt for holders of a visa issued by a Schengen Member State. ; 🇮🇪 Ireland – holders of valid visa for the United Kingdom do not require a visa. ; 🇲🇽 Mexico – Permanent residents of Canada, EU or USA; or holders of a valid USA visa do not require a visa. Certain countries waive the visa requirement if the visitor is in the possession of a valid visa or residence card of another country.

Question: what countries require travel visas for us citizens?
Answer: us.