Near GZ is a notable building, the First Congregational Church. This buiding has been around since 1842, but has history in it that is prehistoric. The stone foundation is Isle La Motte Crown Point Limestone cut from the fossilized tropical reef, worked by the Fisk Quarry. Not bad. Isle La Motte Crown Point Limestone is prized, notably being used as limestone in Radio City Music Hall in New York and the National Gallery of Art in Washington, D.C.
Some 450 million years ago, Isle La Motte was covered by a tropical ocean teeming with early forms of life. When these creatures died, their hard shells piled up on the ocean floor, forming part of what scientists consider to be the earliest biologically diverse coral reef on the planet. The mounds or reefs of the Crown Point Formation are of much higher faunal diversity than the underlying Day Point buildups, with varying abundances of algae, stromatoporoids, sponges, coral, bryozoa and stromatolites as the framebuilders. Stromatoporoid mounds are visible on the quarry walls and in cuts of the stone used in materials.
Keep an eye open, you might be able to spot some prehistory in this comparatively new history's make up.
Higher difficulty for denser muggle area.