Ireland's "Pap of Glencar" is a 3,000-year-old, still-functioning, artificial water fountain - Apparently.
The Pap of Glencar, located in County Sligo, Ireland, is a natural limestone rock formation that has been harnessed to create a unique water feature. According to local legend, the ancient Celts built a spring-fed fountain into the rock, which still functions today. The fountain's water level is reportedly controlled by a hidden mechanism, although the exact method remains unknown. Despite being 3,000 years old, the Pap of Glencar continues to supply water to the surrounding area.