Have you heard of Portugal's Birthing Stones? - The Portugal News
Arouca’s unique birthing stones are roughly 310 million years old and scientifically speaking, there is nothing identical to them anywhere else in the world...
Casa Das Pedras Parideiras Darouca Geopark Alexandra Paz Pedras Parideiras Interpretation Centre Casa Das Pedras Parideiras Interpretation Centre
Source: theportugalnews.com