How are these tours free?

How are these tours free?
The Concept

Free Tours' concept

We take you on a guided tour around our city and share with you our  time and knowlegde, based on weeks, months, years of study, research and dedication.

In the end, you can thank your guide with a gratification.

The Free Walking Tours' Guides do not receive any payment or comission on these tours, other that the gratuity of our guests.