I have done lots of tours across Europe and also three long tours round the world, each one a great adventure:
The first one going east through England, India, South East Asia, Japan, Australia, New Zeeland and the US. It lasted for ten months.
The second one going west through America, the Cook Islands, New Zeeland, Australia, South East Asia, and Japan.
The third one going west again and this time with a focus on the US spending many months in New York, Baltimore, Vegas and Los Angeles. Then NZ, Australia and Asia.