Azerbaijan, the nation and former Soviet republic, is bounded by the Caspian Sea and Caucasus Mountains, which span Asia and Europe. Its capital, Baku, is famed for its medieval walled Inner City.
Bahrain is Arab country situated in a bay on the southwestern coast of the Persian Gulf. It is an archipelago consisting of Bahrain Island and some 30 smaller islands.
Georgia, a country at the intersection of Europe and Asia, is a former Soviet republic that’s home to Caucasus Mountain villages and Black Sea beaches.
Iran, also called Persia, and officially the Islamic Republic of Iran, is a country in Western Asia. With 83 million inhabitants, Iran is the world's 18th most populous country.