"With our current method of mail transportation slowly shifting toward electronic transfer, it is difficult to imagine a country in which the main source of delivering mail was by horseback. Between April 1860 and October 1861, mail was carried by horseback on an 1800-mile trail from St. Joseph, Missouri, to Sacramento, California, in only 10 days. Today, visitors can follow the footsteps of these postal pioneers on an auto road route. Traces of the original track, such as landmarks, graves, preserved structures, and markets, still exist and can be seen on the Pony Express National Historic Trail." [Travel+Leisure]
National Park
Website: Pony Express National Historic Trail
Address: 914 Penn St, St Joseph, MO 64503
Sources: Best National Park in Every State