Vatican City, a city-state surrounded by Rome, Italy, is the headquarters of the Roman Catholic Church. It's home to the Pope and a trove of iconic art and architecture.

Estonia, a country in Northern Europe, borders the Baltic Sea and Gulf of Finland. Including more than 1,500 islands, its diverse terrain spans rocky beaches, old-growth forest and many lakes.

Monaco, officially the Principality of Monaco, is a sovereign city-state, country, and microstate on the French Riviera in Western Europe.

Lithuania, officially the Republic of Lithuania, is a country in the Baltic region of Europe. Lithuania is one of the Baltic states.

Belarus, officially the Republic of Belarus, formerly known by its Russian name Byelorussia or Belorussia, is a landlocked country in Eastern Europe.

Serbia, officially the Republic of Serbia, is a landlocked country situated at the crossroads of Central and Southeast Europe in the southern Pannonian Plain and the central Balkans.