On January 8, 1861, the Washington Legislature established Shoshone County and made Pierce the county seat. By that summer, thousands of gold seekers poured into the Nez Perce country, which had been set aside as a reservation in 1855, and the town became a boisterous mining town in what was then Washington Territory. At first, the county commissioners met and court proceedings were held in rented rooms. In 1862, Shoshone County built a courthouse at Pierce. The Pierce Courthouse served governmental needs until 1885, when the county seat was moved to Murray.

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In the summer of 1865, General Patrick E. Connor led a column of troops from Fort Laramie into the Powder River Country of northern Wyoming. The Powder River Expedition's mission was to make war on the Indians and punish them, so that they would be forced to keep the peace. On August 28th, with the column located on Prairie Dog Creek, Pawnee Scouts arrived with information of an Arapahoe village encamped on the Tongue River. Following a night march with 250 soldiers and 80 Pawnee Scouts, Connor's force attacked Black Bear's Arapahoe village while the Indians were in the act of packing to move. The soldiers overran the camp and pushed the Indians 10 miles up Wolf Creek. The Indians fought a desperate rear guard action, protecting their families and eventually forcing the soldiers to withdraw. During this action, other soldiers burned the camp and its supplies, making it a funeral pyre for their dead. Indian casualties included 64 warriors and several hundred ponies. As the soldiers withdrew the Indians advanced, recapturing several of their ponies, and continued harassing the column for several days. Connor's column marched back to Fort Laramie following the establishment of Fort Connor on the Powder River near present-day Kaycee.

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The old Anaconda Copper Company smelter stack, completed in 1919, is one of the tallest free-standing brick structures in the world at 585 feet. The inside diameter is 75 feet at bottom, tapering to 60 feet at the top. In comparison, the Washington Monument is 555 feet tall. The stack dominates the landscape like the Company once dominated the area's economic life. Since the smelter closed in 1980, the stack has become a symbol of the challenges that face communities dependent on finite resources.

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This site commemorates a battle fought on July 28, 1864, between troops commanded by General Alfred Sully and Sioux Indians. Sully's 2,200 troops, with the aid of artillery batteries, scattered the encamped village reported to contain 6,000 warriors, with losses of 5 soldiers and perhaps 100–150 Indians. There is a marker on the site.

The site is open to the public.

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Near this area, a wooden picket fort was constructed around 1831 by Mexican forces in anticipation of trouble with Anglo immigrants. The fort apparently was named for a camp of Lipan Apaches in the vicinity. In 1835, the small guard force that held the fort surrendered it to Texan forces without a shot being fired. In 1842, a battalion of Texas volunteers camped in this area. In an attempt to lay claim to the territory between the Nueces River and the Rio Grande, the camp was seized by Mexican general Antonio Canales, but the Mexican forces later retreated. Around 10 years later, during the Mexican War, troops under General Zachary Taylor passed through this area on their way to the Rio Grande.

The site is open to the public.

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The Berkeley Architectural Heritage Association is an educational and preservation advocacy organization. The association strives to further public interest in Berkeley, California's architectural history.

The association offers tours and lectures. These events do not occur on a regular schedule, and the tours appear to be annual.

This site honors George T. Johnson, Company G, Third Illinois Cavalry, who drowned in the lake during the 1863 Sibley expedition. There is a marker on the site.

The site is open to the public.

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This site marks the birthplace of Walhalla. The town was first called St. Joseph after a mission established near Pembina in 1848 by Father George Belcourt. An original trading post built by trader Norman Kittson in 1851 was later moved to the site. There is a marker on the site.

The site is open to the public.

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This site was used as the July 3-4 campsite of the 1863 Sibley expedition. There is a marker on the site.

The site is open to the public.

Website does not specify any interpretive services available at the site.