The previous post got “published” before it was finished, so this post is going out to announce the update of the prior post and to include some fossil photos.
Everywhere you step or look in Lisbon there are fossils—interior floors and walls are often covered with fossiliferous limestone. This rock was quarried from a place where oysters were once very abundant! The three photos below show oyster fossils in three locations: in situ in a coastal outcrop, as a flooring tile, and “faux fossils” in the wall of a small cathedral (with cherub for scale!).
Final footnote. A fun restaurant name—”Here there is fish”!