Wyoming between the Sierra Madre Mountains and the Snowy Range near Grand Encampment. Once government-sponsored expeditions to the Yellowstone country began, reports by Colter and Bridger, previously believed to be apocryphal, were found to be true. This led to the creation of Yellowstone National Park, which became the world's first national park in 1872. Nearly all of Yellowstone National Park lies within the far northwestern borders of Wyoming. On December 10, 1869, territorial Governor John Allen Campbell extended the right to vote to women, making Wyoming the first territory and then United States state to grant suffrage to women. In addition,
Wyoming Territorial Prison State Historic Site Wyoming Territorial Prison State Historic Site The Wyoming Territorial Prison is a former federal government prison near Laramie, Wyoming. Built in 1872 it is one of the oldest buildings in Wyoming. It operated as a federal penitentiary from 1872 to 1890, and as a state prison from 1890 to 1901. It was then transferred to the University of Wyoming and was used as an agricultural experiment station until 1989. In 1991 the facility was opened to the public, and in 2004 was designated as Wyoming Territorial Prison State Historic Site. The prison was built in 1872 and began accepting prisoners