Heritage Open Day: The NNHS was founded in 1876 and has created or been given a number of very interesting natural history collections in the last 150 years. Visit and have a look at these very varied and historic collections. The NNHS was founded in 1876 and has our own premises, the Humfrey Rooms where we keep our many historic and large collections. Many feature local samples. The collections include Butterfies, Moths, Rocks and Fossils, Shells, Sands, Birds Eggs (100+ years old) Victorian Microscope Slides and a number of Herbariums. As well as number of smaller collections. Society members will be present to guide you round any collections you wish to look at.