There are 5 countries bordering Switzerland: France, Germany, Austria, Liechtenstein and Italy.
Luxembourg and Belgium are both bordered by France and Germany
Belgium is right next to the north of France.
South-Eastern France and Monaco are both bordered by the Mediterranean Sea.
The question as written is unanswerable; If it's an independent republic, then it is not part of Italy. If the question intends to ask: What country entirely bordered by Italy is an independent republic? then the answer is San Marino. Vatican City and Seborga are both quasi-independent countries bordered entirely by Italy, but neither is a republic.
France and Italy are both in Europe
Italy
There are 3, actually. Vatican and San Marino, both inside Italy, and Lesotho, surrounded by South Africa. That excludes countries that have access to the sea, like Monaco and Gambia.
Belize (capital: Belmopan) is the country located on the Yucatan Peninsula, bordered by both Mexico and Guatemala.
I'd say France or Italy. I've been to both and they seem the most touristy places. i think Italy more so. Greece is
Belgium, Luxemburg, Germany, Switzerland, Italy, Monaco, Andorra, and Spain
USA, Canada, Russia, Japan, South Korea, France, Italy, and Germany.