In the year 1899, the fossil remnants of the Homo sapiens neanderthalensis species were found at the excavation site located at the Hušnjak hill in Krapina.

During a six-year research at the site, led, for the time, by highly expert Dragutin Gorjanović-Kramberger, a total of 876 single fossil Neanderthal fossil remains were found, placing Krapina in the world's scientific heritage as the world's richest Neanderthal finding site.