Nowadays, if you wanted to travel around the world, it's as easy as booking an around the world ticket and stop off at as many places as you want. A pretty quick and easy affair. But if you want to take it slow and steady, you could do what
George Matthew Schilling did back in 1897-1904. Which brings us to todays Guinness World Record for the first person to circumnavigate the world by walking. I'm sure it was a great workout.