In which state of America will you find the Berlin Historic District which encompasses the ghost town of Berlin established as part of the Union Mining District and Berlin–Ichthyosaur State Park, a recreation area and historic preserve that protects ichthyosaur fossils and the ghost town?
Berlin Historic District (Berlin, Nevada):  The town was established in 1897 as part of the Union Mining District after the opening of the Berlin Mine the previous year.
i don't know