Fossils : Ammonites are the most found fossils that hit the shores particularly after a storm. Whitby cliffs and beaches are great for fossil finding.
Jet Jewellery: The history of Whitby is closely associated with the jet. This black gemstone is lighter than amber, crushes similar and is flammable as well. It is a fossil wood that has been transported into the sea by rivers during the Jurassic period, about 160 million years ago.
While you're in the region its also worthwhile to pay York city a visit, especially for its Minster + the Rose Window as well as its most famous street "The Shambles".