Hoover Dam is considered "one of the top 10 construction achievements of the 20th century," according to Vegas.com. Construction on the dam began in 1930 and was completed in less than five years. The dam is named for former President Herbert Hoover, who negotiated water arrangements between Nevada and surrounding states. The dam has been designated a National Historic Landmark, as it is the "highest concrete dam in the Western Hemisphere," according to Vegas.com
Fort Churchill has been designated as a state park by the State of Nevada. Located in Lyon County, Nevada, the monument was an army fort originally built in 1861. The fort provided "protection for early" settlers," according to the Nevada Division of State Parks. It is located eight miles east of Carson City, Nevada and 36 miles west of Fallon, Nevada. The park charges and entrance fee and an additional fee if visitors camp in the park. The park also has various exhibits which convey the park's history.
The Mormon State Historical Monument is made up of the Genoa fort and stockade and land on which the fort and stockade sits. The monument is located in Douglas County, Nevada. The park is "Nevada's first permanent non-Indian settlement, established in 1851," according to the state Parks department. The park served as a trading site, supplying goods to those traveling to California in search of gold. There is no charge to roam the park, but there is a fee to enter the museum.