- Albania
- Andorra
- Armenia
- Austria
- Azerbaijan
- Belarus
- Belgium
- Bosnia and Herzegovina
- Bulgaria
- ✔ Croatia
- Cyprus
- ✔ Czech Republic
- ✔ Denmark
- Estonia
- Finland
- France
- Georgia
- Germany
- Greece
- ✔ Hungary
- Iceland
- Ireland
- ✔ Italy
- Kazakhstan
- Kosovo
- Latvia
- Liechtenstein
- Lithuania
- Luxembourg
- Macedonia
- Malta
- Moldova
- Monaco
- Montenegro
- ✔ Netherlands
- Norway
- Poland
- ✔ Portugal
- Romania
- ✔ Russia
- San Marino
- Serbia
- Slovakia
- Slovenia
- ✔ Spain
- ✔ Sweden
- Switzerland
- Turkey
- Ukraine
- ✔ United Kingdom
- ✔ Vatican City
https://www.countries-ofthe-world.com/countries-of-europe.html
In total: 51, visited: 12 (at least 24 hours, excluding the Vatican City), left to visit: 39