I traveled to three countries in the Caucasus region. My first stop was Baku, Azerbaijan, a city renowned for its mix of historical sites, modern marvels, and natural beauty, making it a sought-after tourist destination. Highlights include the Baku Old City, the contemporary Heydar Aliyev Cultural Center, and Atashgah Zoroastrian Fire Temple. The Baku Boulevard, a picturesque promenade along the Caspian Sea, is another favorite spot, along with the Flame Towers, striking architectural landmarks. (90 photos)