There are approximately 196 major countries in the world today - give or take - many of whom are open to visitors and would love any contribution towards their tourism industry.. That being said, most of these countries do require visitors to let them know what their reasons are for visiting, which means that a lot of them do require you to have a valid Visa before entering the country, depending on your nationality.
It’s pretty important to make sure whether or not you need a Visa to visit a specific country, some countries don’t have facilities that accommodate Visa applications and issuing on your arrival, so you’ll need to make sure if you have to apply in advance or not.
Even if you don’t intend to stay in a country for a holiday (you’re just transiting through en-route to another destination), some countries require you to apply for a Transit Visa.
Travellers that aren’t aware of this can land themselves in a considerable inconvenience, financial liability and even stand the risk of being refused an entry into the country. Any issues with customs and immigration can be avoided if you do your homework. Please check www.visalink.com.au/visas to see whether you need a Visa, and what the entry, exit or transit requirements are for your specific passport.