Nevada City was the first to use the word "Nevada" in its name. In 1851 the newly formed Nevada County used the same name as the county seat. The bordering state of Nevada used the same name in 1864. The region came to life in the Gold Rush of 1849. Many historical sites remain to mark the birth of this important region in California's formative years. Among them are the Nevada Theatre in Nevada City, the oldest theater built in California in 1865. It operates to this day and once hosted Mark Twain among other historical figures. The Old 5 Mile House stagecoach stop built in 1890, also operates to this day as a provider of hospitality spanning three centuries. This historical site still features "The stagecoach safe" that is on display outside the present day restaurant and is the source of many legends of stagecoach robbers and notorious highwaymen in the California gold rush era. The gold industry in Nevada County thrived into the post-WWII days.