Lassen Volcanic National Park

The Manzanita Lake Naturalist's Services Historic District encompasses the historic area devoted to visitor interpretation services at the northwest entrance of Lassen Volcanic National Park in northeastern California. The district's earliest structures were built by Benjamin and Estella Loomis, who were instrumental in the establishment of the park and among the park's first concessioners. The 1927 Loomis Museum and its seismograph hut were built by the Loomises and were donated, together with 40 acres (16 ha) of land to the National Park Service in 1929. The Loomis House, also known as the Loomis Art House and Manzanita Lake Ranger Station, was built about the same time as the museum and served as their residence, photography studio and shop until the 1950s under the name "B.F. Loomis Photo and Art Store".

The geothermal areas in Lassen Volcanic National Park include several groups of hot springs and fumaroles, as remnants of former volcanic activity, exist in Lassen Volcanic National Park in northeastern California. Most of these lie in or are closely adjacent to Mount Tehama's caldera. Bumpass Hell is the most spectacular of these, but others of importance are Sulphur Works, Little Hot Springs Valley, Boiling Springs Lake and Devil's Kitchen. In each thermal area, the highest temperature of water generally is close to the boiling temperature at the altitude of the particular spring or fumarole — 198 °F (92 °C) at Bumpass Hell and 191 °F (88 °C) on the northwest flanks of Lassen Peak. Temperatures as high as 230 °F (110 °C) have been recorded in the park.

The Lassen Volcanic National Park Highway Historic District includes the main roadway developed within Lassen Volcanic National Park in northern California from 1925 to 1951. The road was developed to allow tourists access to the central part of the national park, and was designed in accordance with National Park Service design principles for naturalistic road design and the National Park Service Rustic style of design and construction. The new road was intended to supplant existing primitive roads that led into the park from the periphery, cutting straight through the park to its major sights. The road is designated California State Route 89.

The Horseshoe Lake Ranger Station in Lassen Volcanic National Park, California is a backcountry ranger station that was built by Civilian Conservation Corps labor in 1934. The cabin typifies National Park Service standard designs for such structures in the prevailing National Park Service Rustic style then used by the Park Service. It is the only such example of a standard-plan backcountry ranger station in Lassen Volcanic National Park. There were originally two structures at the site, the residence, and a now-vanished barn.

The Nobles Emigrant Trail, also known as the Fort Kearney, South Pass and Honey Lake Wagon Road, is a trail in California that was used by emigrant parties from the east as a shortened route to northern California. It was pioneered in 1851 by William Nobles, who discovered an easy shortcut between the Applegate Trail in Nevada and the Lassen Trail in California. The trail was extensively used until the 1870s, when it was superseded by railroads.

The Mount Harkness Fire Lookout, on Mount Harkness in Lassen Volcanic National Park, in Plumas County, California near Mineral, California, was listed on the National Register of Historic Places in 2017.

The 2012 Reading Fire was a large wildfire in Lassen Volcanic National Park and the Lassen National Forest in Northern California. Ignited by a lightning strike on July 23, the fire was managed for ecological benefits by park officials until shifts in the weather caused the fire to jump its intended control lines. The Reading Fire ultimately burned 28,079 acres (11,363 hectares), partially outside the park, before it was fully contained on August 22, 2012. The fire destroyed no buildings and caused no fatalities or even serious injuries. The fire's unintended escape led members of the public and several California politicians to criticize park officials for allowing the fire to go unsuppressed after its discovery.

Dittmar Volcano, located on the border of Shasta, Lassen, and Tehama counties in California, is an extinct stratovolcano in the Cascade Range.

Table Mountain, in Shasta County, California, is an extinct stratovolcano in the Cascade Range.