Zadar in Croatia has an amazing sight:
The Sea Organ – a series of perforated stone stairs lead into the sea where the ebb and flow of the tides results in mystical notes and sighs.
The sound is hypnotic and the volume increases as ferries pass by sending their wash into the organ.
A truly mesmerising experience.
“Sea Organ Video”:https://www.youtube.com/watch?v=n86pF-wQKrw