How much does it cost to listen to audio guides?

 Nothing! The service is totally free.

How is this project supported?

The project goes ahead thanks to the good will of the Staff. However, donations from those who consider the work performed and the service offered are welcome.

Are there advertising spaces on the site?

Absolutely yes. Since the site is the result of a passionate amateur work, the Staff welcomes all the sponsors who want to be visible on the site to ensure a lasting future for the project.