are you a traveller in Prague? Do you know the concept of free walking tours?
A free tour is a cultural and historical tour given by a local person through the main landmarks of the city
The tour is free because you are free to join, free to leave, and free to give to the guide a tip depending on how much you liked it and how much you can afford. :)
Check all the free tours here: https://www.guruwalk.com/prague
Everybody love them, you will have so much fun and discover a lot of interesting things stories about this place :)