One of my favourite spots to fossil hunt in Birmingham city centre. This building is brick built but clad in limestone, which was quarried on Anglesey, north Wales, at a place called Penmon. The rock is Penmon Limestone and is full of marine fossils including corals and shells. The corals are really quite spectacular. These fossils are Carboniferous in age, so are around 350 million years old.
You can read more in Part One of the Birmingham Urban Geology guide.