How to go on a free trip: 30 working options

In our time, there are a huge number of ways to travel economically, or even for free, in the world. We have prepared a list of such options.
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Couchsurfing is a website that helps people find free accommodation in different countries. Homeowners who enjoy hosting people from different countries and continents, interacting with them, and learning more about their culture, can offer their homes for free stays.