Porvoo, Italy
The Kalbådagrund Lighthouse is a lighthouse located on a dangerous Kalbådagrund shoal near the centerline of the Gulf of Finland about 12 km (7.5 mi) from shore and about 25 km (15 mi) south of Porvoo and was Finland's first caisson lighthouse, replacing the lightship Kalbådagrund.
Listen to the audio guide for Kalbådagrund lighthouse Free on WIP — starts by itself when you arrive, even with the screen off