Fort Washita was established in 1842 as the southwestern-most post in the United States. (Beyond the borders to the south and west was the Republic of Texas which had recently won its independence from Mexico.) The purpose of the post was to protect the Chickasaw and Choctaw Indians from the Plains Indians. For centuries the latter had used this area for hunting and were not happy with newcomers settling in the area. Troops stationed at Fort Washita from time to time in the 1840s included the 2nd Dragoons, the U.S. Regiment of Riflemen, the 6th Infantry, the 7th Infantry, and the 5th Infantry. During a portion of the 1850s the post served as the United States Army Field Artillery School. Throughout the 1840s and 1850s the post provided quarters for the United States Indian Agency to the Chickasaw and Choctaw governments. On April 16, 1861, the fort was abandoned by U.S. forces under the command of Colonel William Emory. The next day Fort Washita was occupied by Confederate forces and used during the War Between the States. For the next hundred years, the buildings were used by members of the Colbert family who were leaders of the Chickasaw Nation. The fort was acquired by the Oklahoma Historical Society in 1962 and has been designated as a National Historic Landmark.

Website does not specify services available at the site.

Near the site of the battle of Fallen Timbers, this small park contains a monument honoring Major General Anthony Wayne as well as smaller monuments to the soldiers and Native Americans who died in the battle. The battle of Fallen Timbers on 20 August, 1794, was decisive in bringing the Indians of the Northwest Territory to sign the Treaty of Greene Ville. By this treaty the Indians ceded southern and eastern Ohio to settlers. This brief battle, an overwhelming victory for Wayne's forces, was fought in an area recently ravaged by a windstorm, hence the name Fallen Timbers.

Does not provide specifics about interpretative resources available at the site.

Commonly referred to as Castle Hill, this park is one of the most historically significant sites in Alaska. Tlingit natives originally inhabited this area and built a strategic fortification at this site. Between 1804—1867, Russians occupied this site. In 1867, on top of Castle Hill, Alaska was officially transferred from Russia to the United States. Today, Castle Hill is a state historic site and also designated as a National Historic Landmark. A fully-accessible walkway leads visitors to the top of the hill and provides views of downtown Sitka and the waterfront. Interpretive panels provide opportunities to learn more about the history of this site.

Website does not indicate whether any interpretative services are present at the site, beyond signage.

Fort O'Brien (Fort Machias) was built in 1775 and destroyed by the British in the same year. This state historic site is one of few Maine forts active during three wars—the American Revolution, the War of 1812 and the Civil War. Fort O'Brien's layout was altered several times over the 90 years it was active on this site; but the fort's important role in protecting the Machias River and its towns remained unchanged. It was refortified in 1777 and destroyed once again by the British in 1814. Well-preserved earthworks which overlook Machias Bay were erected for a battery of guns in 1863. The first naval engagement of the Revolution was fought offshore in 1775, five days before the Battle at Bunker Hill.

The site is open to the public.

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

Fort Kaskaskia State Historic Site preserves the timeworn earthen remains of Fort Kaskaskia, constructed by the French ca. 1759 to defend the town of Kaskaskia. Today's historic site consists of four major sections: the remains of Fort Kaskaskia, Garrison Hill Cemetery, the Mississippi River overlook and picnic area, and a large campground.

Website does not offer substantive information on interpretative services available at the site.

The oldest blockhouse in the United States is all that remains of Fort Halifax at the confluence of the Kennebec and Sebasticook Rivers. English settlers built the fort in 1754 to protect colonial settlements along the Kennebec and it served as a garrison for troops from 1754–1766.

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

This site marks a base camp established by General Alfred Sully during his 1864 campaign. Rifle pits were dug around the circled wagons but the camp was never attacked; many of the rifle pits are still visible. 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.

Website has very little specific information about services offered at the site.

Fort O'Brien (Fort Machias) was built in 1775 and destroyed by the British in the same year. This state historic site is one of the few Maine forts active during three wars: the American Revolution, the War of 1812, and the Civil War. Fort O'Brien's layout was altered several times over the 90 years it was active on this site. But the fort's important role in protecting the Machias River and its towns remained unchanged. It was refortified in 1777 and destroyed once again by the British in 1814. Well-preserved earthworks which overlook Machias Bay were erected for a battery of guns in 1863. The first naval engagement of the Revolution was fought offshore in 1775, five days before the Battle at Bunker Hill. In 1923, the United States Government deeded the site of Fort O'Brien to the State of Maine. First administered as a State Historic Site in 1966, it is now maintained by the Bureau of Parks and Lands.

Website offers no specifics on services offered at the site.

Fort Mims site commemorates the Fort Mims battle which took place August 30, 1813. The attack on Fort Mims is considered a leading cause of the Creek War of 1813-1814.

Site offers no staff or facilities, according to website.