The list of hardest countries to visit in 2025 includes 1)Russia, 2)Cuba, 3)Iran, 4)Turkmenistan, 5)Chad, 6)Bhutan, 7)Saudi Arabia, 8)Western Sahara, 9)Somalia, and 10)North Korea. Russia's e-visa system excludes many Western nations, while Cuba has restrictions for American tourists. Chad's visa process is complicated by limited consular offices and invitation letter requirements. Bhutan's unique tourism model includes prearranged accommodations and daily tourism taxes. Western Sahara offers visa-free travel to only six nationalities with diplomatic passports. North Korea remains the most challenging, requiring state-approved tours and prohibiting entry for American and South Korean passport holders. These countries have strict visa policies due to political, safety, or isolationist reasons.