The historic City of Black Hawk is located in Gilpin County. The tiny town is a historic mining settlement founded in 1859 during the Pike's Peak Gold Rush. Black Hawk is located adjacent to Central City, another historic mining settlement in Gregory Gulch. The two cities form the federally designated Central City/Black Hawk National Historic District. The area flourished during the mining boom of the late 19th century, today it is in heated competition for gambling revenue with Central City.