Planning an international trip requires understanding visa requirements. Each country has its own rules depending on your nationality and purpose of visit.
For example, the Schengen Visa allows travel across 27 European countries with a single visa. The US tourist visa (B2) requires a detailed application process, while countries like Thailand and Maldives offer visa-on-arrival for many nationalities.
Always check official embassy websites and apply well in advance to avoid last-minute travel issues.